1 Department of Neurology, College of Medicine, St. Vincent's Hospital, The Catholic University of Korea, Seoul, Republic of Korea.
2 Department of Neurology, College of Medicine, St. Vincent's Hospital, The Catholic University of Korea, Seoul, Republic of Korea. [email protected].
3 Department of Neurology, St. Vincent's Hospital, The Catholic University of Korea, 93-6, Ji-Dong, Paldal-Gu, Suwon, 442-723, Gyeonggi-Do, Korea. [email protected].