1. Department of Neurology, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea.
2. Department of Neurology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea.
3. Department of Neurology, Seoul National University Hospital, Seoul, Korea.
4. Department of Neurology, Korea University Anam Hospital, Korea University School of Medicine, Seoul, Korea.
5. Department of Pediatrics, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea.