Kwang-Soo Lee1, Joong-Seok Kim2, Jee-Eun Lee1. 1. Department of Neurology, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea. 2. Department of Neurology, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea. neuronet@catholic.ac.kr.