1. Divisions of General Internal Medicine (C.J.C.), Los Angeles, California 90024
2. General Internal Medicine (C.-H.T.), Los Angeles, California 90024
3. Geriatrics (A.S.K.), Los Angeles, California 90024
4. Endocrine Unit (J.S.F.), Massachusetts General Hospital, Boston, Massachusetts 02114
5. Division of Reproductive Endocrinology and Infertility (J.F.R.), Ann Arbor, Michigan 48109
6. Department of Psychiatry and Epidemiology (R.C.T.), University of Pittsburgh School of Medicine and Graduate School of Public Health, Pittsburgh, Pennsylvania 15213
7. Geriatrics (M.-H.H.), Los Angeles, California 90024
8. University of Michigan Health System, and Department of Epidemiology (H.Z.), University of Michigan, School of Public Health, Ann Arbor, Michigan 48109
9. Geriatrics (G.A.G.), David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California 90024