What were Shakespeare's final thoughts on history, tragedy, and comedy? Shakespeare's Last Plays focuses much needed scholarly attention on Shakespeare's "Late Romances." The work--a collection of newly commissioned essays by leading scholars of classical political philosophy and literature--offers careful textual analysis of Pericles, Prince of Tyre, Cymbeline, The Winter's Tale, The Tempest, All is True, and The Two Noble Kinsmen. The essays reveal how Shakespeare's thought in these final works compliments, challenges, fulfills, or transforms previously held conceptions of the playwright (...) and his political-philosophical views. (shrink)

Do the nonverbal signals used to make social judgements differ depending on the type of judgement being made and what other nonverbal signals are visible? Experiment 1 investigated how nonverbal signals across three channels (face: angry/fearful, posture: expanded/contracted, lean: forward/backward), when viewed together, were used for judgements of emotion, threat, and status. Experiment 2 replicated Experiment 1 and explored how use of the body channels differed in making social judgements when the face channel was obscured. Both experiments found facial anger (...) linked to high anger, threat, and status ratings; facial fear was linked to low ratings. Expanded body posture increased threat and status judgements, while backward lean decreased anger and threat. With the face channel blocked (Experiment 2B), the influence of body posture increased across emotion, threat, and status judgements, while body lean was more consistent. Findings demonstrate that despite the face’s importance across types of social judgements, the body channels differentially contribute to judgements of emotion, threat and status. Further, they are differentially affected by the absence of facial information. How much face and body-related channels are used in social judgements is moderated by the type of judgement being made and the availability of other (particularly facial) channel information. (shrink)

The present study examined how emotional fit with culture – the degree of similarity between an individual’ emotional response to the emotional response of others from the same culture – relates to well-being in a sample of Asian American and European American college students. Using a profile correlation method, we calculated three types of emotional fit based on self-reported emotions, facial expressions, and physiological responses. We then examined the relationships between emotional fit and individual well-being (depression, life satisfaction) as well (...) as collective aspects of well-being, namely collective self-esteem (one’s evaluation of one’s cultural group) and identification with one’s group. The results revealed that self-report emotional fit was associated with greater individual well-being across cultures. In contrast, culture moderated the relationship between self-report emotional fit and collective self-esteem, such that emotional fit predicted greater collective self-esteem in Asian Americans, but not in European Americans. Behavioral emotional fit was unrelated to well-being. There was a marginally significant cultural moderation in the relationship between physiological emotional fit in a strong emotional situation and group identification. Specifically, physiological emotional fit predicted greater group identification in Asian Americans, but not in European Americans. However, this finding disappeared after a Bonferroni correction. The current finding extends previous research by showing that, while emotional fit may be closely related to individual aspects of well-being across cultures, the influence of emotional fit on collective aspects of well-being may be unique to cultures that emphasize interdependence and social harmony, and thus being in alignment with other members of the group. (shrink)

Background The use of lengthy, detailed, and complex informed consent forms is of paramount concern in biomedical research as it may not truly promote the rights and interests of research participants. The extent of information in ICFs has been the subject of debates for decades; however, no clear guidance is given. Thus, the objective of this study was to determine the perspectives of research participants about the type and extent of information they need when they are invited to participate in (...) biomedical research. Methods This multi-center, cross-sectional, descriptive survey was conducted at 54 study sites in seven Asia-Pacific countries. A modified Likert-scale questionnaire was used to determine the importance of each element in the ICF among research participants of a biomedical study, with an anchored rating scale from 1 to 5. Results Of the 2484 questionnaires distributed, 2113 were returned. The majority of respondents considered most elements required in the ICF to be ‘moderately important’ to ‘very important’ for their decision making. Major foreseeable risk, direct benefit, and common adverse effects of the intervention were considered to be of most concerned elements in the ICF. Conclusions Research participants would like to be informed of the ICF elements required by ethical guidelines and regulations; however, the importance of each element varied, e.g., risk and benefit associated with research participants were considered to be more important than the general nature or technical details of research. Using a participant-oriented approach by providing more details of the participant-interested elements while avoiding unnecessarily lengthy details of other less important elements would enhance the quality of the ICF. (shrink)

Background: Although convolutional neural networks (CNNs) achieve high diagnostic accuracy for detecting Alzheimer’s disease (AD) dementia based on magnetic resonance imaging (MRI) scans, they are not yet applied in clinical routine. One important reason for this is a lack of model comprehensibility. Recently developed visualization methods for deriving CNN relevance maps may help to fill this gap as they allow the visualization of key input image features that drive the decision of the model. We investigated whether models with higher accuracy (...) also rely more on discriminative brain regions predefined by prior knowledge. Methods: We trained a CNN for the detection of AD in N = 663 T1-weighted MRI scans of patients with dementia and amnestic mild cognitive impairment (MCI) and verified the accuracy of the models via cross-validation and in three independent samples including in total N = 1655 cases. We evaluated the association of relevance scores and hippocampus volume to validate the clinical utility of this approach. To improve model comprehensibility, we implemented an interactive visualization of 3D CNN relevance maps, thereby allowing intuitive model inspection. Results: Across the three independent datasets, group separation showed high accuracy for AD dementia versus controls (AUC ≥ 0.91) and moderate accuracy for amnestic MCI versus controls (AUC ≈ 0.74). Relevance maps indicated that hippocampal atrophy was considered the most informative factor for AD detection, with additional contributions from atrophy in other cortical and subcortical regions. Relevance scores within the hippocampus were highly correlated with hippocampal volumes (Pearson’s r ≈ −0.86, p < 0.001). Conclusion: The relevance maps highlighted atrophy in regions that we had hypothesized a priori. This strengthens the comprehensibility of the CNN models, which were trained in a purely data-driven manner based on the scans and diagnosis labels. The high hippocampus relevance scores as well as the high performance achieved in independent samples support the validity of the CNN models in the detection of AD-related MRI abnormalities. The presented data-driven and hypothesis-free CNN modeling approach might provide a useful tool to automatically derive discriminative features for complex diagnostic tasks where clear clinical criteria are still missing, for instance for the differential diagnosis between various types of dementia. (shrink)

The objectives of this study were to develop a high-density chromosome bin map of homoeologous group 7 in hexaploid wheat, to identify gene distribution in these chromosomes, and to perform comparative studies of wheat with rice and barley. We mapped 2148 loci from 919 EST clones onto group 7 chromosomes of wheat. In the majority of cases the numbers of loci were significantly lower in the centromeric regions and tended to increase in the distal regions. The level of duplicated loci (...) in this group was 24% with most of these loci being localized toward the distal regions. One hundred nineteen EST probes that hybridized to three fragments and mapped to the three group 7 chromosomes were designated landmark probes and were used to construct a consensus homoeologous group 7 map. An additional 49 probes that mapped to 7AS, 7DS, and the ancestral translocated segment involving 7BS also were designated landmarks. Landmark probe orders and comparative maps of wheat, rice, and barley were produced on the basis of corresponding rice BAC/PAC and genetic markers that mapped on chromosomes 6 and 8 of rice. Identification of landmark ESTs and development of consensus maps may provide a framework of conserved coding regions predating the evolution of wheat genomes. (shrink)

Bayesians take “definite” or “single-case” probabilities to be basic. Definite probabilities attach to closed formulas or propositions. We write them here using small caps: PROB(P) and PROB(P/Q). Most objective probability theories begin instead with “indefinite” or “general” probabilities (sometimes called “statistical probabilities”). Indefinite probabilities attach to open formulas or propositions. We write indefinite probabilities using lower case “prob” and free variables: prob(Bx/Ax). The indefinite probability of an A being a B is not about any particular A, but rather about the (...) property of being an A. In this respect, its logical form is the same as that of relative frequencies. For instance, we might talk about the probability of a human baby being female. That probability is about human babies in general — not about individuals. If we examine a baby and determine conclusively that she is female, then the definite probability of her being female is 1, but that does not alter the indefinite probability of human babies in general being female. Most objective approaches to probability tie probabilities to relative frequencies in some way, and the resulting probabilities have the same logical form as the relative frequencies. That is, they are indefinite probabilities. The simplest theories identify indefinite probabilities with relative frequencies.3 It is often objected that such “finite frequency theories” are inadequate because our probability judgments often diverge from relative frequencies. For example, we can talk about a coin being fair (and so the indefinite probability of a flip landing heads is 0.5) even when it is flipped only once and then destroyed (in which case the relative frequency is either 1 or 0). For understanding such indefinite probabilities, it has been suggested that we need a notion of probability that talks about possible instances of properties as well as actual instances.. (shrink)

The US neutrino community gathered at the Workshop on the Intermediate Neutrino Program at Brookhaven National Laboratory February 4-6, 2015 to explore opportunities in neutrino physics over the next five to ten years. Scientists from particle, astroparticle and nuclear physics participated in the workshop. The workshop examined promising opportunities for neutrino physics in the intermediate term, including possible new small to mid-scale experiments, US contributions to large experiments, upgrades to existing experiments, R&D plans and theory. The workshop was organized into (...) two sets of parallel working group sessions, divided by physics topics and technology. Physics working groups covered topics on Sterile Neutrinos, Neutrino Mixing, Neutrino Interactions, Neutrino Properties and Astrophysical Neutrinos. Technology sessions were organized into Theory, Short-Baseline Accelerator Neutrinos, Reactor Neutrinos, Detector R&D and Source, Cyclotron and Meson Decay at Rest sessions.This report summarizes discussion and conclusions from the workshop. (shrink)

New trends in the economic systems management in the context of modern global challenges: collective monograph / scientific edited by M. Bezpartochnyi, in 2 Vol. // VUZF University of Finance, Business and Entrepreneurship. – Sofia: VUZF Publishing House “St. Grigorii Bogoslov”, 2020. – Vol. 1. – 309 p.

Electrical resistivity and ac-calorimetric measurements reveal a complex magnetic phase diagram for single crystals of the ferromagnetic Kondo-lattice compound CeAgSb2 at high pressures up to 80 kbar. The ferromagnetic order at TC = 9.6 K at ambient pressure is completely suppressed at a critical pressure PC = 35 kbar. Another magnetic transition, possibly antiferromagnetic, found above 27 kbar, attains a maximum value TN 6 K at 44 kbar and then appears to be completely suppressed by 50 kbar. Thermodynamic and transport (...) measurements in the ferromagnetic state indicate an energy gap Δ 30 K in the spin-wave excitation spectrum at ambient pressure which decreases to Δ 10 K at P = 30 kbar. No superconductivity is observed at ambient pressure above T 0.1 K, under applied pressure in the ferromagnetic state (P = 28.5 kbar), nor in the antiferromagnetic state (P = 33 − 46 kbar) above 0.3 K. © 2003 The American Physical Society. (shrink)

I 2007 gennemførte forbundskansler Angela Merkel en sundhedsreform der blandt andet indebærer, at tyske borgere ikke frit kan afgøre, om de vil deltage i forebyggende programmer, da et fravalg kan medføre økonomiske konsekvenser. Hermed udvider den tyske stat sin ret til at gribe ind i borgernes liv, når det handler om sekundær forebyggelse, fx i form af screening for kræftsygdomme. Dette kan være problematisk da den bedst tilgængelige evidens viser at tre igangværende kræftscreeningsprogrammer ikke kun har gavnlige virkninger, men også (...) betydelige skadelige virkninger. Formålet med denne undersøgelse var at undersøge, hvilke holdninger eksperter, politikere og sundhedsmyndigheder i Danmark har til tvang og/eller belønning i forbindelse med screening for kræftsygdomme, og om de ville støtte eller fraråde en tysk model i det danske sundhedsvæsen.Der blev foretaget enkeltinterviews med strategisk udvalgte eksperter. Interviewene blev transskriberet og analyseret med en fænomenologisk analysemetode, og derefter analyseret og diskuteret i forhold til utilitaristisk og deontologisk etik, samt evidensen vedrørende de tre eksisterende kræftscreeningsprogrammer i Danmark.Alle informanterne var kritiske over for det tyske forslag. Til gengæld blev forholdet mellem de gavnlige og skadelige virkninger af kræftscreening vurderet meget forskelligt. Manglen på enighed, uklare udtalelser og ikke-stringent terminologi bestyrkede vor konklusion; at det danske sundhedsvæsen for det første ikke bør følge den tyske kurs og, for det andet, at man bør være kritisk over for implementering af screeningsprogrammer for kræftsygdomme. Hvis forebyggende initiativer kan være mere til skade end gavn, bør de altid overvejes nøje i lyset af sundhedsvæsnets oprindelige intention om at hjælpe og beskytte det enkelte menneske. (shrink)

In 2035 global egg demand will have risen 50% from 1985. Because we are not able to tell in the egg whether it will become a male or female chick, billons of one day-old male chicks will be killed. International research initiatives are underway in this area, and governments encourage the development of an alternative with the goal of eliminating the culling of day-old male chicks. The Netherlands holds an exceptional position in the European egg trade, but is also the (...) only country in the European Union where the downside of the egg sector, the practice of killing day-old male chicks, is a recurrent subject of societal debate. ‘Preventing the killing of young animals’ and ‘in ovo sex determination’ are the two alternative approaches available to solve this problem. It is clear that both approaches solve the problem of killing day-old male chicks, either by keeping them alive or by preventing them from living, but they also raise a lot of new animal welfare-related dilemmas. A thorough analysis was undertaken of these dilemmas and the results are presented in this article. The analysis resulted in an ethical framework based on the two main approaches in bioethics: a consequentialist approach and a deontological approach. This ethical framework was used to develop an online survey administered to ascertain Dutch public opinion about these alternative approaches. The results show that neither alternative will be fully accepted, or accepted by more than half of Dutch society. However, the survey does provide an insight into the motives that are important for people’s choice: food safety and a good treatment of animals. Irrespective of the approach chosen, these values should be safeguarded and communicated clearly. (shrink)

Context. The identification of the sources that reionized the Universe and their specific contribution to this process are key missing pieces of our knowledge of the early Universe. Faint star-forming galaxies may be the main contributors to the ionizing photon budget during the epoch of reionization, but their escaping photons cannot be detected directly due to inter-galactic medium opacity. Hence, it is essential to characterize the properties of faint galaxies with significant Lyman continuum photon leakage up to z 4 to (...) define indirect indicators allowing analogues to be found at the highest redshift. Aims. Long gamma-ray bursts explode typically in star-forming regions of faint, star-forming galaxies. Through LGRB afterglow spectroscopy it is possible to detect directly LyC photons. Our aim is to use LGRBs as tools to study LyC leakage from faint, star-forming galaxies at high redshift. Methods. Here we present the observations of LyC emission in the afterglow spectra of GRB 191004B at z = 3:5055, together with those of the other two previously known LyC-emitting LGRB, to determine their LyC escape fraction and compare their properties. Results. From the afterglow spectrum of GRB 191004B we determine a neutral hydrogen column density at the LGRB redshift of og =17:2 0:15, and negligible extinction. The only metal absorption lines detected are C iv and Si iv. In contrast to GRB 050908 and GRB 060607A, the host galaxy of GRB 191004B displays significant Ly emission. From its Ly emission and the non-detection of Balmer emission lines we constrain its star-formation rate to 1 SFR 4:7 M yr. 1. We fit the Ly emission with a shell model and find parameters values consistent with the observed ones. The absolute LyC escape fractions we find for GRB 191004B, GRB 050908 and GRB 060607A are of 0:35+0:10.0:11, 0:08+0:05.0:04 and :20+0:05.0:05, respectively. We compare the LyC escape fraction of LGRBs to the values of other LyC emitters found from the literature, showing that LGRB afterglows can be powerful tools to study LyC escape for faint high-redshift star-forming galaxies. Indeed we could push LyC leakage studies to much higher absolute magnitudes. The host galaxies of the three LGRB presented here have all M1600 >.19:5 mag, with the GRB 060607A host at M1600 >.16 mag. LGRB hosts may therefore be particularly suitable for exploring the ionizing escape fraction in galaxies that are too faint or distant for conventional techniques. Furthermore the time investment is very small compared to galaxy studies. (shrink)

In this consensus report by a diverse group of academics who conduct and/or are concerned about social and behavioral genomics (SBG) research, the authors recount the often‐ugly history of scientific attempts to understand the genetic contributions to human behaviors and social outcomes. They then describe what the current science—including genomewide association studies and polygenic indexes—can and cannot tell us, as well as its risks and potential benefits. They conclude with a discussion of responsible behavior in the context of SBG research. (...) SBG research that compares individuals within a group according to a “sensitive” phenotype requires extra attention to responsible conduct and to responsible communication about the research and its findings. SBG research (1) on sensitive phenotypes that (2) compares two or more groups defined by (a) race, (b) ethnicity, or (c) genetic ancestry (where genetic ancestry could easily be misunderstood as race or ethnicity) requires a compelling justification to be conducted, funded, or published. All authors agree that this justification at least requires a convincing argument that a study's design could yield scientifically valid results; some authors would additionally require the study to have a socially favorable risk‐benefit profile. (shrink)

To localize wheat ESTs on chromosomes, 882 homoeologous group 6-specific ESTs were identified by physically mapping 7965 singletons from 37 cDNA libraries on 146 chromosome, arm, and sub-arm aneuploid and deletion stocks. The 882 ESTs were physically mapped to 25 regions flanked by 23 deletion breakpoints. Of the 5154 restriction fragments detected by 882 ESTs, 2043 were localized to group 6 chromosomes and 806 were mapped on other chromosome groups. The number of loci mapped was greatest on chromosome 6B and (...) least on 6D. The 264 ESTs that detected orthologous loci on all three homoeologs using one restriction enzyme were used to construct a consensus physical map. The physical distribution of ESTs was uneven on chromosomes with a tendency toward higher densities in the distal halves of chromosome arms. About 43% of the wheat group 6 ESTs identified rice homologs upon comparisons of genome sequences. Fifty-eight percent of these ESTs were present on rice chromosome 2 and the remaining were on other rice chromosomes. Even within the group 6 bins, rice chromosomal blocks identified by 1-6 wheat ESTs were homologous to up to 11 rice chromosomes. These rice-block contigs were used to resolve the order of wheat ESTs within each bin. (shrink)

The focus of this study was to analyze the content, distribution, and comparative genome relationships of 996 chromosome bin-mapped expressed sequence tags accounting for 2266 restriction fragments on the homoeologous group 3 chromosomes of hexaploid wheat. Of these loci, 634, 884, and 748 were mapped on chromosomes 3A, 3B, and 3D, respectively. The individual chromosome bin maps revealed bins with a high density of mapped ESTs in the distal region and bins of low density in the proximal region of the (...) chromosome arms, with the exception of 3DS and 3DL. These distributions were more localized on the higher-resolution group 3 consensus map with intermediate regions of high-mapped-EST density on both chromosome arms. Gene ontology classification of mapped ESTs was not significantly different for homoeologous group 3 chromosomes compared to the other groups. A combined analysis of the individual bin maps using 537 of the mapped ESTs revealed rearrangements between the group 3 chromosomes. Approximately 232 of the consensus mapped ESTs matched sequences on rice chromosome 1 and revealed large- and small-scale differences in gene order. Of the group 3 mapped EST unigenes ∼21 and 32% matched the Arabidopsis coding regions and proteins, respectively, but no chromosome-level gene order conservation was detected. (shrink)

J. B. Predd S. R. Kulkarni H. V. Poor D. N. Osherson Department of Electrical Engineering Department of Psychology Princeton University Princeton University Princeton, NJ 08544 Princeton, NJ 08544 {jpredd,kulkarni,poor}@princeton.edu osherson@princeton.edu..

© 2016 Regents of the University of California.The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,062 new measurements from 721 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. All the particle properties and search limits are listed in Summary Tables. We also give numerous (...) tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 117 reviews are many that are new or heavily revised, including those on Pentaquarks and Inflation. The complete Review is published online in a journal and on the website of the Particle Data Group. The printed PDG Book contains the Summary Tables and all review articles but no longer includes the detailed tables from the Particle Listings. A Booklet with the Summary Tables and abbreviated versions of some of the review articles is also available. (shrink)

The complex hexaploid wheat genome offers many challenges for genomics research. Expressed sequence tags facilitate the analysis of gene-coding regions and provide a rich source of molecular markers for mapping and comparison with model organisms. The objectives of this study were to construct a high-density EST chromosome bin map of wheat homoeologous group 2 chromosomes to determine the distribution of ESTs, construct a consensus map of group 2 ESTs, investigate synteny, examine patterns of duplication, and assess the colinearity with rice (...) of ESTs assigned to the group 2 consensus bin map. A total of 2600 loci generated from 1110 ESTs were mapped to group 2 chromosomes by Southern hybridization onto wheat aneuploid chromosome and deletion stocks. A consensus map was constructed of 552 ESTs mapping to more than one group 2 chromosome. Regions of high gene density in distal bins and low gene density in proximal bins were found. Two interstitial gene-rich islands flanked by relatively gene-poor regions on both the short and long arms and having good synteny with rice were discovered. The map locations of two ESTs indicated the possible presence of a small pericentric inversion on chromosome 2B. Wheat chromosome group 2 was shown to share syntenous blocks with rice chromosomes 4 and 7. (shrink)

DBS Think Tank IX was held on August 25–27, 2021 in Orlando FL with US based participants largely in person and overseas participants joining by video conferencing technology. The DBS Think Tank was founded in 2012 and provides an open platform where clinicians, engineers and researchers can freely discuss current and emerging deep brain stimulation technologies as well as the logistical and ethical issues facing the field. The consensus among the DBS Think Tank IX speakers was that DBS expanded in (...) its scope and has been applied to multiple brain disorders in an effort to modulate neural circuitry. After collectively sharing our experiences, it was estimated that globally more than 230,000 DBS devices have been implanted for neurological and neuropsychiatric disorders. As such, this year’s meeting was focused on advances in the following areas: neuromodulation in Europe, Asia and Australia; cutting-edge technologies, neuroethics, interventional psychiatry, adaptive DBS, neuromodulation for pain, network neuromodulation for epilepsy and neuromodulation for traumatic brain injury. (shrink)

This report describes the rationale, approaches, organization, and resource development leading to a large-scale deletion bin map of the hexaploid wheat genome. Accompanying reports in this issue detail results from chromosome bin-mapping of expressed sequence tags representing genes onto the seven homoeologous chromosome groups and a global analysis of the entire mapped wheat EST data set. Among the resources developed were the first extensive public wheat EST collection. Described are protocols for sequencing, sequence processing, EST nomenclature, and the assembly of (...) ESTs into contigs. These contigs plus singletons were used for selection of distinct sequence motif unigenes. Selected ESTs were rearrayed, validated by 5′ and 3′ sequencing, and amplified for probing a series of wheat aneuploid and deletion stocks. Images and data for all Southern hybridizations were deposited in databases and were used by the coordinators for each of the seven homoeologous chromosome groups to validate the mapping results. Results from this project have established the foundation for future developments in wheat genomics. (shrink)

Based on a conference held at Wesleyan University, this book offers an illuminating compendium of opinion on several cardinal issues related to induction; specifically, the nature of explanation, probability, prediction, behavior theory, and the role of values in scientific inferences. Papers are presented by Hughes Leblanc, Wesley Salmon, W. Ross Ashby, Daniel Berlyne, Herbert Robbins, Adolf Grünbaum, N. R. Hanson, Sidney Morgenbesser, and Richard Braithwaite. Contributors to the subsequent discussions include Max Black, Michael Scriven, and Wilfrid Sellars. Both the (...) papers read and most of the ensuing discussions are reproduced in full, and the reader can witness the gestation of opinion and the sharpening of issues as vividly as though he were present himself.—T. S. V. (shrink)

This article provides ethical guidance on using race in health research as a variable or in defining the study population. To this end, a plain, non-exhaustive checklist is provided for researchers and research ethics committees, preceded by a brief introduction on the need for justification when using race as a variable or in defining a study population, the problem of exoticism, that distinctions pertain between race, ethnicity and ancestry, the problematic naming of races, and that race does not serve well (...) as a presumed biological construct in genetic research. (shrink)

Photo ID 222412412 © US Navy Medicine | Dreamstime.com ABSTRACT In a non-military setting, the answer is clear: it would be unethical to treat someone based on non-medical considerations such as nationality. We argue that Battlefield Triage is a moral tragedy, meaning that it is a situation in which there is no morally blameless decision and that the demands of justice cannot be satisfied. INTRODUCTION Medical resources in an austere environment without quick recourse for resupply or casualty evacuation are often (...) limited. The shortage extends not only to supplies like blood products and drugs, but physicians and other medical personnel. In the midst of a mass casualty scenario, such as a battle that includes intense ground fighting, the medical staff will stretch scarce resources and triage casualties according to specific criteria. Typically, they proceed by providing care for the most severely wounded first, referred to here as conventional triage. At times, though, the staff may reverse the triage so that soldiers with minor wounds can return to the fight. In a mass casualty situation, when medical personnel apply conventional triage and treat casualties from opposing forces, a dilemma may arise. We argue that it can be permissible for military physicians to prioritize their own soldiers over enemy combatants in a mass casualty triage, where reverse triage does not apply. The case we will focus on is as follows: Battlefield Triage: During combat operations on a remote island in the Pacific Ocean, a compatriot soldier and an enemy combatant arrive at the compatriot soldier country’s medical treatment facility. Both have similar gunshot wounds to the abdomen, and they arrive with similar conditions. Both have low oxygen saturation and excessive blood loss. The sole physician only has enough time to stabilize one person. The scenario is brief, and we are aware that medical rules of eligibility will most often dictate how the physician proceeds,[1] but this scenario is useful in setting up the question we focus on in this paper: would it be wrong to favor the stabilization of a soldier just because the soldier is the physician’s compatriot? In other words, can nationality serve as an ethically justified tiebreaker in a situation such as Battlefield Triage?[2] In a non-military setting, the answer is clear: it would be unethical to treat someone based on non-medical considerations such as nationality. The AMA’s Code of Medical Ethics asserts that physicians have “ethical obligations to place patients’ welfare above their self-interest and above obligations to other groups.”[3] The World Medical Association’s Declaration of Tokyo affirms that “no motive, whether personal, collective or political, shall prevail against this higher purpose” of alleviating distress.[4] Physicians are taught early on that triage decisions must be medically indicated and made without consideration of factors such as race, ethnicity, religion, social status, and nationality. They are taught that public trust and obligations of justice grounded in equality demand that only medical indications be considered. But military physicians in a military setting are beholden to obligations, duties, and responsibilities as members of the military, and when these obligations, duties, and responsibilities conflict, as they do in Battlefield Triage, which loyalties win out and why?[5] Critics of partiality on national grounds argue that partiality undermines public trust in medicine and justice because everyone should be treated equally regardless of nationality.[6] Proponents of partiality argue that military obligations supersede equality and that justice requires partiality in such cases.[7] Despite the critics’ disagreement, both agree that there is a morally right, perhaps even blameless, course of action. Drawing on insights from virtue ethics, we argue that Battlefield Triage is a moral tragedy in which justice is unattainable and there is no action without moral cost. The assumption that there is a morally right choice is flawed. We argue that while no decision in this scenario is free from moral blame, there are reasons to favor treating one’s soldiers over enemy combatants. I. The Case Against Partiality There is a common assumption that there is a morally right or just decision in Battlefield Triage. A number of organizations and scholars claim that it is wrong for military physicians to favor their own soldiers on the grounds of nationality or some form of ‘group membership.’ (In a conflict involving service members from multiple nations working as a coalition, a soldier from an allied country may receive the same priority as the US service member due to ‘group membership.’) The World Medical Association’s WMA Declaration of Lisbon on the Rights of the Patient, which was reaffirmed in 2015, posits that, “[i]n circumstances where a choice must be made between potential patients for a particular treatment that is in limited supply, all such patients are entitled to a fair selection procedure for that treatment. That choice must be based on medical criteria and made without discrimination.”[8] This echoes what was set forth in Article 12 of the Geneva Conventions, which states that “[o]nly urgent medical reasons will authorize priority in the order of treatment to be administered.”[9] The argument for impartiality in Battlefield Triage is that every person is morally equal, and equality entails that medical distribution is, “based on a combination of medical need and urgency.”[10] This is in keeping with the bioethical principles that are generally applied.[11] II. The Case for Partiality On the other side, there are arguments that favoritism is the ethically right decision in Battlefield Triage.[12] The argument asserts that members of the military form a morally significant community of friends and participation in these relationships demands partiality. Just as parents have strong ethical duties to their children and not just any children, military personnel have ethical duties to their group, a group that involves an affirmation of mutual aid and support. Some have termed these ‘associative duties. According to Michael Gross, obligations of friendship, care, and solidarity “leave very little room for generally applicable principles of justice that would obligate a medic to treat enemy or non-compatriot wounded ahead of their compatriots.”[13] This is true in Battlefield Triage, but it may also be true even if the enemy’s soldier were more seriously wounded: “the ethics of small group cohesion, largely an ethics of care, mostly replaces the demands of impartial justice.”[14] In a more recent article, Gross explains that preferential treatment is ethically justified based on fighting capability and “the special obligations people owe friends, family, and, no less, comrades-in-arms.”[15] To not show partiality to the US soldier would be morally wrong on the grounds of friendship and mutual care.[16] III. The Moral Tragedy of Battlefield Triage Defenders and critics of Battlefield Triage favoritism based on nationality both frame their position as just or fair. For example, Justin List argues that physicians are “bound to practice medical neutrality,”[17] Marcus Adams denies that physicians “possess special ethical obligations” to enemy combatants because of their profession.[18] These perspectives assume that there is a morally right decision and that justice is attainable. The assumption that there is or can be a morally right Battlefield Triage decision, and we need to put our heads together to figure it out, remains strongly entrenched. However, the facts of the situation should give us pause; there are too many people and too few resources, and this demands a decision-making process that determines who will receive scarce resources. By its very nature, a battlefield triage decision has to be made based on some characteristic or value, a characteristic or value that will inevitably favor some at the expense of others. This is precisely why competing analyses “in the military context struggle to resolve these conflicts satisfactorily.”[19] Drawing on the insights of virtue ethics, we suggest that Battlefield Triage is a moral tragedy. Virtue ethics suggests that morality is about acting virtuously, which is to say that we should do what a virtuous person would do in the situation. Ethics is about figuring out how a just, wise, compassionate, loving, and fair person would act, and then doing that, as one grows in virtue. But life is not always clear cut, and it is possible that virtuous people may find themselves in a moral tragedy, a situation in which, through no fault of one’s own, a person must make a morally objectionable decision. After the action the virtuous person “emerges having done a terrible thing, the very sort of thing that the callous, dishonest, unjust, or in general vicious agent would characteristically do.”[20] Stated differently, a moral tragedy presents a virtuous person with two or more courses of action, all of which have a moral cost.[21] In Battlefield Triage, no matter how the physician goes about deciding, there is going to be defensible concern from those not saved. The fact that there are more people than can be helped fosters competing values in battlefield triage: maximize lives saved, treat people equally, treat the worse off, and support the war effort. Treating people equally may create tension between treating the worse off, maximizing lives saved, and supporting the war effort. Reverse triage is a case in point, as supporting the war effort conflicts with treating the worse off first, as is a fair lottery system since deploying a lottery may not maximize lives saved or support the war effort. There can be reasons why one person is selected over another, to be sure. Yet, there are reasons for making a decision, and that the decision is subject to legitimate moral concern is another. To recognize the moral tragedy of Battlefield Triage is to recognize the impossibility of acting blamelessly in the situation. In this situation, the virtuous military physician is going to have to sacrifice important values such as justice, compassion, and respect for others, even with a defensible criterion in hand. The physician will grieve this sacrifice accordingly. The physician may find her decision difficult or stressful, and rightly so, because of what her circumstances require of her. This kind of moral tragedy results “in actions which betray and violate the rights of persons to whom there may be a strong duty of care. When this happens, it properly triggers an appropriate moral emotion since our moral integrity has been violated and this affects how we think of ourselves and what we have become.”[22] Rather than view her triage decision as the morally superior choice, the virtuous military physician will view her decisions in these circumstances in a different light: it is the least bad option in a terrible situation, and she did something ethically problematic, something that is contrary to her moral character. She deeply regrets the circumstances in which she had to act. IV. Virtue Ethics A virtue ethicist has insight into how one should go about deciding what to do in a moral tragedy, although virtue ethics may not be as helpful as one may hope. The goal of the virtuous military physician in Battlefield Triage is to adopt the best course of action or the action that she feels she ought to do, all things considered. This does not make her choice devoid of serious wrongdoing—a decision must be made, but that does not make it just. The virtuous military physician will approach the situation with courage, responsibility, and insight. She will think about the decision carefully, wisely, and conscientiously; she will weigh the goods and harms of the choices before her, in conjunction with a proper conception of the good life, human worth, and understanding of her obligations to others—including chain of command, fellow soldiers, and the medical community. She is attuned to the value of human life and has a reasonable idea of the various ways her decisions will affect others. She recognizes that she is in this non-ideal situation through no fault of her own: she is not the one fighting in battles; she is serving her country as a physician, whose job it is to save lives, treat everyone justly, and promote military objectives. She regrets the decision she is forced to make in battlefield triage, acting “with immense regret and pain,” Hursthouse explains, “instead of indifferently or gladly.”[23] This is because, no matter what decision is made, the virtuous military physician “does something terrible or horrible,” something she otherwise would not do and is contrary to her values.[24] V. A Resolvable Moral Tragedy Instead of asking whether there is a morally right decision, in which a decision is morally blameless and above reproach, the virtue ethicist asks whether there is a decision with a convincing rationale, knowing that a decision can have a clear rationale but still be morally tragic. It is perfectly reasonable to think that different virtuous persons will arrive at different courses of action: “two virtuous agents, in the same situation,” Hursthouse writes, “may act differently” in irresolvable moral tragedies, in cases in which there is no clear course of action.[25] Because a person must act in a moral tragedy, one goal is to identify reasons for choosing the chosen action. Some decisions are clearly indefensible—treating neither the compatriot soldier nor the enemy combatant in Battlefield Triage would be wrong—and some decisions are more problematic than others. If the military physician selects to treat the soldier because she does not like the enemy combatant’s skin color, such a reason would be deeply problematic. But much of the debate over how to act in a moral tragedy is not over clearly indefensible or problematic criteria. Instead, the literature is largely about different standards or implementations of justice. Some scholars defend nation-impartial triage as right, while others defend nation-aware triage as right, and each argues that the other side is promoting an unjust or otherwise wrong solution to Battlefield Triage. We suggest that Battlefield Triage is a resolvable moral tragedy and that virtue ethics offers convincing reasons to prefer the treatment of the compatriot soldier rather than the enemy combatant on the grounds of national identity. Virtues are integral to living a good life, a flourishing life, but as Aristotle observed long ago, human beings are inherently social, interdependent and interconnected in profound ways.[26] This goes beyond the obvious fact that we need each other to survive day to day (one person makes clothes, another farms, and another makes tools); the claim is that a good or flourishing life depends in large part on one’s social network or community. This is why many of Aristotle’s moral virtues are other facing: justice, friendship, generosity, and magnanimity, to name a few. Courage, a typically self-facing virtue, is understood by Aristotle to be the virtue that regards one’s fear of death in battle, a battle fought on behalf of one’s city.[27] All of this remains true today. Namely, there is an important sense in which our community matters to our lives: it is easier to live a good, flourishing life if one is part of a good, flourishing community. Our community is made up of smaller groups, and it is more accurate to say that we are simultaneous members of different groups within a broader community. A person may be part of a family, friend group, research team, large state university, city, state, and nation. Groups can function well or not, as we all have experienced, and this suggests that there are virtues or excellences that groups can instantiate. Good groups are unified in purpose, with each member doing their duty alongside others for the attainment of that purpose. Good groups manifest solidarity among their members. Although Aristotle does not list solidarity as a virtue, a number of modern-day virtue ethicists have begun examining how group solidarity can be a virtue that contributes to a good or flourishing life.[28] Solidarity is not conceptualized as an individual virtue, a virtue possessed by a person in isolation of others; instead, it is a collective virtue, a virtue that is shared among members of a defined group with particular ends.[29] “A group has solidarity to the extent that its members are disposed to: (1) share values, aims, or goals; (2) care about those values, aims, or goals; (3) act in accordance with those values, aims, or goals; (4) trust the testimony of other group members with respect to those values, aims, and goals; and (5) feel a sense of belonging to the group.”[30] The virtue of collective or group solidarity involves individuals having special concern for each other, shared aims and values, trust, loyalty, and a sense of belonging with these specific others. There is a oneness to the group in the pursuit of a definite goal or purpose, involving mutual support and affirmation of each member. As such, the group has ends and goods above and beyond the good of each individual person. Sometimes solidarity requires personal sacrifice for the collective (for example, a father sacrificing food so his child can eat). The virtue of collective or group solidarity is important to the military and medical community at every level, and for clear reasons. In the military, there is a clear hierarchy of command, unity of purpose and end, mutual trust and support in complex settings, and so on. Soldiers need to know they can count on one another, and solidarity grounds a soldier’s ability to trust others and be assured of mutual aid. In medicine, solidarity maintains self-regulation of the profession, shared values and goals, as well as public support, not to mention that day-to-day operations require physician trust, engagement, and effort toward the ends of clinical care. Physicians need to work together, along with others, in pursuit of health, and disunity is sowed when there is mistrust, selfishness, or disengagement among the healthcare team and organization. Importantly, just as we are all members of various groups and hence may manifest group solidarity in different settings, the virtuous military physician instantiates collective solidarity with both the medical profession and the military. Her dual loyalty contributes to the moral difficulty of acting in Battlefield Triage. The military physician has competing obligations to distinct groups and cannot satisfy all obligations in Battlefield Triage. Solidarity with the military supports the consideration of favoring the soldier for reasons of national identity, whereas solidarity with the medical community does not. Something has to give, which is why it is a moral tragedy. The virtuous military physician, therefore, must weigh the costs of each course of action. To fulfill her obligations to the medical community would require that she does not use nationality and other non-medical considerations in Battlefield Triage. Since the soldier and enemy combatant are equally injured, justice would demand a random process, perhaps a flip of the coin. Although this may satisfy obligations the military physician has to the medical community, this would be costly to the physician’s military group. If word gets out that the physician decides who to treat based on a coin toss, soldiers, families, and citizens may become frustrated and angry. Soldier morale may go down if it becomes known that a coin flip led to the preventable death of a soldier and the saving of an enemy combatant who had killed (or attempted to kill) other soldiers. As Gross highlights, military solidarity involves a mutual aid promise that military personnel promise to help one another.[31] A military physician is part of the military and, as such, is part of the mutual aid promise, which would appear to be violated if the physician flips a coin. Treating a member of one’s own team may be psychologically more beneficial than treating an enemy combatant and may lead to less moral distress.[32] Finally, treating soldiers rather than enemy combatants promotes broader military and social aims, including returning soldiers to health, maintaining unity of purpose, and minimizing community suffering from a soldier’s death. Favoring members of one’s group, that is, triage based on nationality in Battlefield Triage, would fulfill obligations of military group loyalty, which is contrary to the values and duties of medicine. It does not seem as though showing favoritism in this particular situation is very costly to the medical community or general public, but this is because there is recognition that the physician is in the military. Medicine is impartial to non-medical indications partly because of fairness and to promote public trust in medicine. However, Battlefield Triage is unique, as medicine is being practiced in a non-public, wartime setting. In ordinary circumstances, a patient’s identity is irrelevant, and physicians ought not play favorites. Since Battlefield Triage is not an ordinary circumstance, decisions based on patient identity may not undermine public trust in medicine. In addition, it is contestable that fairness in Battlefield Triage requires that no consideration be paid to one’s nationality. Fairness is about giving each person their due, what is owed to them, and the case can be made that soldiers who place themselves in danger for the sake of the common good or a just cause are owed special attention when they suffer harm in the line of duty. In other words, soldiers voluntarily undergo risk to themselves for the greater good, and society owes them for this sacrifice. This plausibly includes preferential treatment in a situation such as Battlefield Triage. So, while the medical community affirms justice demands non-preferential treatment, the military community can affirm the opposite. The demands of fairness are unclear at best or in conflict in this situation: demands of physician justice decry favoritism, while demands of military justice support favoritism. Triage not based on nationality is arguably unfair and triage based on nationality may not undermine public trust, after all. All things considered, there is a clear rationale for favoring nationality-based preferential treatment in Battlefield Triage. Adopting a nationality-based preference in this situation is more defensible than not. This does not make such a decision ethically right or just. Preference based on nationality is the least bad decision, but it is not morally blameless. It involves one in a serious moral wrong, a wrong otherwise avoided and contrary to one’s character. The virtuous military physician is in a situation in which obligations conflict, and we disagree with Gross, who posits that care of fellow soldiers “is important to the near exclusion of all else.”[33] Gross fails to appreciate the collective virtue of solidarity as applied to those in medicine. The military physician has duties to fellow soldiers but also to fellow physicians, to the medical community, and humanity. To favor a soldier on grounds of nationality violates her duties and responsibilities to this latter group. She is involved in a moral tragedy and can only seek the most just action given the circumstances, yet, at least in virtue ethics, the action remains far from blameless. CONCLUSION We argue that Battlefield Triage is a moral tragedy, meaning that it is a situation in which there is no morally blameless decision and that the demands of justice cannot be satisfied. As such, the virtuous military physician incurs a moral cost to acting as she does—there is a moral residue. However, despite being a moral tragedy, there are clear reasons to act in favor of treating one’s own, considering group solidarity. As such, these kinds of tragedies are resolvable: virtuous military physicians should favor treatment of their own, although they would do so with sorrow. - [1] Militaries set forth medical rules of eligibility or guidelines used to determine whether a person qualifies for specific medical interventions or treatments in certain circumstances, and these guidelines are binding for a military physician. For example, despite opposition from medical organizations, militaries have adopted reverse triage guidelines for military physicians to follow. For ethical discussion, see Falzone, Elisabeth, P. Pasquier, C. Hoffmann, O. Barbier, M. Boutonnet, A. Salvadori, A. Jarrassier, J. Renner, B. Malgras, and S. Mérat. "Triage in military settings." Anaesthesia Critical Care & Pain Medicine 36, no. 1 (2017): 43-51. https://doi.org/10.1016/j.accpm.2016.05.004 [2] There are issues that are related to this, including the triage of civilians and allied soldiers. We set related issues aside for purposes of this paper [3] American Medical Association, Code of Medical Ethics: Current Opinions with Annotations, 2004–2005 ed. (Chicago, IL: AMA, 2004), 300. [4] American Medical Association, Code of Medical Ethics: Current Opinions with Annotations, 2004–2005 ed. (Chicago, IL: AMA, 2004), 300. [5] This is termed the “dual loyalty” dilemma in military medicine and has been described at length elsewhere: Institute of Medicine (US) Board on Health Sciences Policy. Military Medical Ethics: Issues regarding Dual Loyalties: Workshop Summary. Washington (DC): National Academies Press (US); 2008. Toward a Framework for Resolving Dual Loyalties. Available from: https://www.ncbi.nlm.nih.gov/books/NBK214853/ [6] See Kenneth G. Swan and K.G. Swan, Jr., “Triage: The Past Revisited,” Military Medicine 161:8 (1996): 448–452. https://doi.org/10.1093/milmed/161.8.448; Jerome A. Singh, “American Physicians and dual loyalty obligations in the ‘war on terror,’” BMC Medical Ethics 4.4 (2003): 1–10. https://doi.org/10.1186/1472-6939-4-4; Beam, Thomas E. "Medical Ethics on the Battlefield." Military Medical Ethics: Sect. IV. Medical ethics in the military. Medical ethics on the battlefield: the crucible of military medical ethics 2 (2003): 369-402; Hereth, Blake. "Health justice for unjust combatants." Journal of Military Ethics 20, no. 1 (2021): 67-81. https://doi.org/10.1080/15027570.2021.1949782. [7] See Adams, Marcus P. "Triage priorities and military physicians." In Physicians at war: The dual-loyalties challenge, pp. 215-236. Dordrecht: Springer Netherlands, 2008. Gross, Michael L. "Comradery, community, and care in military medical ethics." Theoretical medicine and bioethics 32 (2011): 337-350. https://doi.org/10.1007/s11017-011-9189-6. Gross, Michael L. "The limits of impartial medical treatment during armed conflict." In Military medical ethics for the 21st century, pp. 71-84. Routledge, 2016. [8] World Medical Association, WMA Declaration of Lisbon on the Rights of the Patient. 5 December 2022, https://www.wma.net/policies-post/wma-declaration-of-lisbon-on-the-rights-of-the-patient/ [9] Geneva Convention for the Amelioration of the Condition of Wounded, Sick in Armed Forces in the Field. 12 August 1949. https://www.un.org/en/genocideprevention/documents/atrocity-crimes/Doc.30_GC-I-EN.pdf. [10] List, Justin M. "Medical neutrality and political activism: physicians' roles in conflict situations." In Physicians at war: The dual-loyalties challenge, pp. 237-253. Dordrecht: Springer Netherlands, 2008. 240 [11] Beauchamp, T., and J. Childress. 2013. Principles of Biomedical Ethics, 7th ed. Oxford, United Kingdom: Oxford University Press. [12] Adams, Marcus P. "Triage priorities and military physicians." In Physicians at war: The dual-loyalties challenge, pp. 215-236. Dordrecht: Springer Netherlands, 2008. [13] Gross, "Comradery, community, and care in military medical ethics," 347. [14] Gross, “Comradery, community, and care in military medical ethics,” 349. [15] Gross, Michael L. "When medical ethics and military ethics collide." Narrative inquiry in bioethics 13, no. 3 (2023): 199-204. 202 https://dx.doi.org/10.1353/nib.2023.a924191 [16] Our argument draws on virtue ethics, from which care ethics derives, and it is worth clarifying how our argument relates to Gross’s. We do not think that the virtue of friendship grounds triage decisions, for we think it is unlikely that the physician and wounded soldier are friends. Instead, as explained below, we think the collective virtue of group solidarity better captures the moral significance of group loyalty and that Gross would agree with us. But since military physicians are part of distinct groups, with competing obligations, the military physician will be forced to sacrifice a value in battlefield triage cases. In other words, we think Gross downplays the dual group membership of a military physician. [17] List,”Medical neutrality and political activism,” 250. [18] Adams,”Triage priorities and military physicians,” 235. [19] London, Leslie, Leonard S. Rubenstein, Laurel Baldwin-Ragaven, and Adriaan Van Es. "Dual loyalty among military health professionals: human rights and ethics in times of armed conflict." Cambridge Quarterly of Healthcare Ethics 15, no. 4 (2006): 381-391. 383. [20] Hursthouse, R. On Virtue Ethics. OUP 1999. 74 [21] Nussbaum, Martha C. "The costs of tragedy: Some moral limits of cost-benefit analysis." The Journal of Legal Studies 29, no. S2 (2000): 1005-1036, 1007. [22] De Wijze, S. (2005). Tragic-remorse–the anguish of dirty hands. Ethical theory and moral practice, 7(5), 453-471, 457. https://doi.org/10.1007/s10677-005-6836-x [23] Hursthouse, 73 [24] Hursthouse, 81 [25] Hursthouse, 72 [26] Aristotle, Politics 1253a8. Reeve, C. D. C., Indianapolis: Hackett Publishing Co., 2017 [27] Aristotle, Nicomachean Ethics. III.6.114a, 34-35. 2002, Nicomachean Ethics, Christopher Rowe (trans.), Oxford: Oxford University Press [28] Byerly, T. Ryan, and Meghan Byerly. "Collective virtue." The Journal of Value Inquiry 50, no. 1 (2016): 33-50. https://doi.org/10.1007/s10790-015-9484-y; Federico, Veronica. "Conclusion: solidarity as a public virtue." Solidarity as a Public Virtue (2018): 495-542. https://doi.org/10.5771/9783845290058. Rehg, William. "Solidarity and the common good: An analytic framework." Journal of Social Philosophy 38, no. 1 (2007): 7-21. https://doi.org/10.1111/j.1467-9833.2007.00363.x [29] Byerly and Byerly. "Collective virtue." 43 [30] Battaly, Heather. "Solidarity: Virtue or vice?." In Social virtue epistemology, pp. 303-324. Routledge, 2022. 304 [31] Ibid., 2011: 341 [32] It might be thought that displaying altruism by helping an enemy combatant at the expense of one’s fellow soldier may be psychologically satisfiying. For evidence that military physicians find it difficult to treat enemy combatants, see Lundberg, Kristina, Sofia Kjellström, Anders Jonsson, and Lars Sandman. "Experiences of Swedish military medical personnel in combat zones: adapting to competing loyalties." Military medicine 179, no. 8 (2014): 821-826. https://doi.org/10.7205/MILMED-D-14-00038. Lamblin, Antoine, Clément Derkenne, Marion Trousselard, and Marie-Ange Einaudi. "Ethical challenges faced by French military doctors deployed in the Sahel (Operation Barkhane): a qualitative study." BMC Medical Ethics 22 (2021): 1-13. https://doi.org/10.1186/s12910-021-00723-2 [33] Ibid., 2011: 344. (shrink)

BackgroundIn the Canadian Alliance for Healthy Hearts and Minds (CAHHM) cohort, participants underwent magnetic resonance imaging (MRI) of the brain, heart, and abdomen, that generated incidental findings (IFs). The approach to managing these unexpected results remain a complex issue. Our objectives were to describe the CAHHM policy for the management of IFs, to understand the impact of disclosing IFs to healthy research participants, and to reflect on the ethical obligations of researchers in future MRI studies.MethodsBetween 2013 and 2019, 8252 participants (...) (mean age 58 ± 9 years, 54% women) were recruited with a follow-up questionnaire administered to 909 participants (40% response rate) at 1-year. The CAHHM policy followed a restricted approach, whereby routine feedback on IFs was not provided. Only IFs of severe structural abnormalities were reported.ResultsSevere structural abnormalities occurred in 8.3% (95% confidence interval 7.7–8.9%) of participants, with the highest proportions found in the brain (4.2%) and abdomen (3.1%). The majority of participants (97%) informed of an IF reported no change in quality of life, with 3% of participants reporting that the knowledge of an IF negatively impacted their quality of life. Furthermore, 50% reported increased stress in learning about an IF, and in 95%, the discovery of an IF did not adversely impact his/her life insurance policy. Most participants (90%) would enrol in the study again and perceived the MRI scan to be beneficial, regardless of whether they were informed of IFs. While the implications of a restricted approach to IF management was perceived to be mostly positive, a degree of diagnostic misconception was present amongst participants, indicating the importance of a more thorough consent process to support participant autonomy.ConclusionThe management of IFs from research MRI scans remain a challenging issue, as participants may experience stress and a reduced quality of life when IFs are disclosed. The restricted approach to IF management in CAHHM demonstrated a fair fulfillment of the overarching ethical principles of respect for autonomy, concern for wellbeing, and justice. The approach outlined in the CAHHM policy may serve as a framework for future research studies.Clinical trial registrationhttps://clinicaltrials.gov/ct2/show/nct02220582. (shrink)

A total of 1918 loci, detected by the hybridization of 938 expressed sequence tag unigenes from 26 Triticeae cDNA libraries, were mapped to wheat homoeologous group 4 chromosomes using a set of deletion, ditelosomic, and nulli-tetrasomic lines. The 1918 EST loci were not distributed uniformly among the three group 4 chromosomes; 41, 28, and 31% mapped to chromosomes 4A, 4B, and 4D, respectively. This pattern is in contrast to the cumulative results of EST mapping in all homoeologous groups, as reported (...) elsewhere, that found the highest proportion of loci mapped to the B genome. Sixty-five percent of these 1918 loci mapped to the long arms of homoeologous group 4 chromosomes, while 35% mapped to the short arms. The distal regions of chromosome arms showed higher numbers of loci than the proximal regions, with the exception of 4DL. This study confirmed the complex structure of chromosome 4A that contains two reciprocal translocations and two inversions, previously identified. An additional inversion in the centromeric region of 4A was revealed. A consensus map for homoeologous group 4 was developed from 119 ESTs unique to group 4. Forty-nine percent of these ESTs were found to be homoologous to sequences on rice chromosome 3, 12% had matches with sequences on other rice chromosomes, and 39% had no matches with rice sequences at all. Limited homology was found between wheat ESTs on homoeologous group 4 and the Arabidopsis genome. Forty-two percent of the homoeologous group 4 ESTs could be classified into functional categories on the basis of blastX searches against all protein databases. (shrink)

A total of 944 expressed sequence tags generated 2212 EST loci mapped to homoeologous group 1 chromosomes in hexaploid wheat. EST deletion maps and the consensus map of group 1 chromosomes were constructed to show EST distribution. EST loci were unevenly distributed among chromosomes 1A, 1B, and ID with 660, 826, and 726, respectively. The number of EST loci was greater on the long arms than on the short arms for all three chromosomes. The distribution of ESTs along chromosome arms (...) was nonrandom with EST clusters occurring in the distal regions of short arms and middle regions of long arms. Duplications of group 1 ESTs in other homoeologous groups occurred at a rate of 35.5%. Seventy-five percent of wheat chromosome 1 ESTs had significant matches with rice sequences, where large regions of conservation occurred between wheat consensus chromosome 1 and rice chromosome 5 and between the proximal portion of the long arm of wheat consensus chromosome 1 and rice chromosome 10. Only 9.5% of group 1 ESTs showed significant matches to Arabidopsis genome sequences. The results presented are useful for gene mapping and evolutionary and comparative genomics of grasses. (shrink)