1. Department of Neurology, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Republic of Korea.
2. Department of Neurology, Konkuk University Medical Center, School of Medicine, Konkuk University, Seoul, Republic of Korea.
3. Department of Psychiatry, Inje University Sanggye Paik Hospital, Seoul, Republic of Korea.
4. Department of Psychiatry, Seoul National University Boramae Hospital, Seoul, Republic of Korea.
5. Department of Neurology, Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea.
6. Department of Neurology, Inha University School of Medicine, Incheon, Republic of Korea.
7. Department of Psychiatry, Konkuk University Medical Center, School of Medicine, Konkuk University, Seoul, Republic of Korea.