1. From the Departments of Neurology (W.J.L., K.H.J., K.J.L., S.T.L., K.C., M.K., S.K.L., J.K.R.) and Radiology (Y.J.R.), Seoul National University Hospital, 101 Daehangno, Jongno-gu, Seoul 110-744, South Korea; Program in Neuroscience, Neuroscience Research Institute of SNUMRC, College of Medicine, Seoul National University, Seoul, South Korea (K.H.J., S.T.L., K.C., M.K., S.K.L.); Department of Neurology, Chung-Ang University Hospital, Seoul, South Korea (J.M.K.); and Department of Neurology, the Armed...