1. From the Laboratory of Epidemiology, Demography, and Biometry (R.J.H., D.J.F., L.J.L.), Intramural Research Program, National Institute on Aging, National Institutes of Health, Bethesda, Md; Honolulu-Asia Aging Study (K.M., L.W.), Kuakini Medical Center, Honolulu, Hawaii; the Department of Medicine (K.M., L.W.), University of Hawaii, John A. Burns School of Medicine, Honolulu, Hawaii; and Social and Scientific Systems (B.S.), Bethesda, Md.