1. From the Department of Medicine and Geriatrics (R.S.K.L.), Shatin Hospital; the School of Public Health (E.M.C.W.); the Department of Psychiatry (W.K.T.), Shatin Hospital; and the Department of Medicine and Therapeutics (J.O.Y.C., L.K.S.W., J.W., T.K.), Prince of Wales Hospital; Chinese University of Hong Kong, Hong Kong, China.