Ji-Soo Kim1, Seong-Hae Jeong2, Jeong-Yoon Choi2, Hyo-Jung Kim2. 1. From the Department of Neurology, Seoul National University College of Medicine (J.-S.K., J.-Y.C.), and Research Administration Team (H.-J.K.), Seoul National University Bundang Hospital; and Department of Neurology (S.-H.J.), Chungnam National University College of Medicine, Chungnam National University Hospital, Daejeon, Korea. jisookim@snu.ac.kr. 2. From the Department of Neurology, Seoul National University College of Medicine (J.-S.K., J.-Y.C.), and Research Administration Team (H.-J.K.), Seoul National University Bundang Hospital; and Department of Neurology (S.-H.J.), Chungnam National University College of Medicine, Chungnam National University Hospital, Daejeon, Korea.