1. From the Stroke Center and Department of Neurology (M.L., J.L.S., B.O.), University of California, Los Angeles, Calif; the Department of Neurology, Chang Gung Memorial Hospital at Chiayi (M.L.) and Linkou (K.H.C.) and Chang Gung University College of Medicine, Taiwan; Ching-Ten Clinic (H.W.L.), Taiwan; the Department of Epidemiology (S.C.C.), School of Public Health, University of California, Los Angeles, Calif.