1. From Stroke and Neural Stem Cell Laboratory in Clinical Research Institute (K.-H.J., K.C., S.-Y.H., S.-T.L., J.-Y.K., M.K., J.-K.R.), Department of Neurology, Seoul National University Hospital, Seoul National University, Seoul, South Korea; the Department of Neurology (K.C.), Seoul National Hospital, Seoul, South Korea; and the Department of Neurology (S.-W.J.), Ilsan Paik Hospital, Inje University, Goyang, South Korea.