1. Department of Neurology, College of Medicine, Dong-A University, Busan, Korea.
2. Department of Neurology, Hangang Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.
3. Department of Neurology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea.
4. Department of Neurology, School of Medicine, Chonbuk National University, Jeonju, Korea.
5. Department of Neurology, Yonsei University College of Medicine, Seoul, Korea.
6. Department of Neurology, College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
7. Department of Neurology, School of Medicine, Gyeongsang National University, Jinju, Korea.
8. Department of Neurology, College of Medicine, University of Ulsan, Ulsan, Korea.
9. Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
10. Department of Neurology, School of Medicine, Keimyung University, Daegu, Korea.
11. Department of Neurology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.