1. Divisions of Geriatric Medicine and Gerontology and Hematology, Johns Hopkins University, Baltimore, Maryland
2. Division of Endocrinology, Diabetes, and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia
3. Department of Biostatistics and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia
4. Section of Hematology/Oncology, University of Chicago, Chicago, Illinois
5. Research Program in Men’s Health: Aging and Metabolism, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
6. Duke University Medical Center, Center for the Study of Aging, Durham, North Carolina
7. Center for Clinical Epidemiology & Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
8. Division of Geriatric Medicine, Yale School of Medicine, New Haven, Connecticut
9. Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, Illinois
10. Department of Internal Medicine and Division of Epidemiology, Department of Family Medicine and Public Health, University of California, San Diego School of Medicine, La Jolla
11. Department of Epidemiology, University of Pittsburgh, Graduate School of Public Health, Pittsburgh, Pennsylvania
12. Divisions of Endocrinology and Geriatrics, Albert Einstein College of Medicine, Bronx, New York
13. Departments of Medicine and Molecular & Cellular Biology, Division of Diabetes, Endocrinology and Metabolism, Baylor College of Medicine and Baylor St Luke's Medical Center, Houston, Texas
14. Department of Medicine, Division of Epidemiology & Community Health, University of Minnesota, Minneapolis
15. Minneapolis VA Health Care System, Minneapolis, Minnesota
16. Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham
17. Geriatric Research, Education, and Clinical Center, Department of Veterans Affairs Puget Sound Health Care System, and Division of Gerontology & Geriatric Medicine, Department of Internal Medicine, University of Washington School of Medicine, Seattle
18. Division of Endocrinology, Metabolism and Molecular Medicine, Northwestern University, Feinberg School of Medicine, Chicago, Illinois
19. Department of Aging & Geriatric Research, University of Florida, Gainesville, Florida
20. Division of Endocrinology, Harbor-University of California at Los Angeles Medical Center and Los Angeles Biomedical Research Institute; Torrance
21. Laboratory of Behavioral Neuroscience, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
22. Division of Geriatric Medicine and Gerontology, Johns Hopkins University, Baltimore, Maryland
23. Department of Medicine, Stanford University, Stanford, California