1. From Department of Neurology (B.J.K., S.-H.L., W.-S.R., B.S.K., C.K.K., B.-W.Y.), Seoul National University Hospital, Seoul, Republic of Korea; Clinical Research Center for Stroke (B.J.K., S.-H.L., W.-S.R., C.K.K., B.-W.Y.), Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.