1. From the Departments of Medicine and Therapeutics (S.G., K.S.W.) and the Department of the Diagnostic Radiology & Organ Imaging (W.W.M.L.), the Chinese University of Hong Kong, Shatin, Hong Kong SAR; the Department of Neurology (S.G.), Peking Union Medical College Hospital, CAMS, PUMC, Beijing, China; the Department of Neurology (T.H., D.W.D., E.B.R.), University of Munster, Germany; the Service de Neurologie (D.W.D.), Centre Hospitalier de Luxembourg, Luxembourg.