[1] Kaiser Permanente Georgia, Atlanta, GA USA
[2] Emory Univ, Sch Med, Div Endocrinol, Atlanta, GA USA
[3] Emory Univ, Rollins Sch Publ Hlth, Dept Biostat, Atlanta, GA USA
[4] Johns Hopkins Med Inst, Dept Geriatr, Baltimore, MD 21205 USA
[5] Univ Calif San Francisco, Dept Epidemiol & Biostat, San Francisco, CA 94143 USA
[6] Univ Tennessee, Ctr Hlth Sci, Dept Prevent Med, Memphis, TN 38163 USA
[7] Univ Pittsburgh, Ctr Aging & Populat Hlth, Pittsburgh, PA USA
[8] NIA, Geriatr Epidemiol Sect, Lab Epidemiol Demog & Biometry, Bethesda, MD 20892 USA