1. From the Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea (J.-H.J., S.J.K., D.L.N.); Department of Neurology, Masan Samsung Hospital, Sungkyunkwan University School of Medicine, Masan, Korea (S.J.Y.); and Department of Neurology, Mokdong Hospital, Ewha Woman’s University School of Medicine, Seoul, Korea (K.G.C.).