1. Department of Bioethics, Clinical Center, National Institutes of Health, Bethesda, Maryland
2. Biostatistics and Clinical Epidemiology Service, Clinical Center, National Institutes of Health, Bethesda, Maryland
3. Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
4. Endocrinology Service, Memorial Sloan Kettering Cancer Center, New York, New York
5. Public Health Section, School of Health and Related Research, University of Sheffield, Sheffield, United Kingdom