1. Department of Epidemiology; Graduate School of Public Health; University of Pittsburgh; Pittsburgh; Pennsylvania
2. Division of Geriatric Medicine; Department of Medicine; School of Medicine; University of Pittsburgh; Pittsburgh; Pennsylvania
3. Longitudinal Studies Section; Clinical Research Branch; National Institute on Aging; Baltimore; Maryland
4. Section of Geriatrics; School of Medicine; Yale University; New Haven; Connecticut
5. Sticht Center on Aging; School of Medicine; Wake Forest University; Winston-Salem; North Carolina
6. Department of Epidemiology and Biostatistics; University of California, San Francisco; San Francisco; California
7. Division of Endocrinology and Metabolism; Department of Medicine; Eastern Virginia Medical School; Strelitz Diabetes Center; Norfolk; Virginia
8. Department of Human Sciences; Loughborough University; Loughborough; UK
9. Departments of Psychiatry, Neurology and Epidemiology; University of California, San Francisco; San Francisco; California
10. Laboratory of Epidemiology, Demography and Biometry; Intramural Research Program; National Institute of Aging; Bethesda; Maryland