1. From the Departments of Medicine & Theraputics (H.M.W., V.C.T.M., Y.H.F., A.W., K.S.W.), Radiology & Organ Imaging (W.W.M.L.), and Psychiatry (W.K.T.), The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China; and the Department of Neurology (H.M.W., R.X.H.), the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.