1. Department of Cardiology (H.W., K.C., M.D., Y.L., W.Z., J.Y.), Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, China.
2. Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China (S.W., S.Z.).
3. Ministry of Health Key Laboratory of Geriatrics (J.-P.C.), Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, China.
4. Beijing Institute of Geriatrics (P.Z.), Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, China.
5. Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing, China (S.Z.).