1 Department of Neurology, Inje University, Haeundae Paik Hospital, Busan, Korea.
2 Department of Neurology, Korea University Guro Hosipital, Korea University College of Medicine, Seoul, Korea.
3 Department of Neurology, Soonchunhyang University Seoul Hospital, Soonchunhyang University School of Medicine, Seoul, Korea.
4 Department of Neurology, Inje University Busan Paik Hospital, Busan, Korea.
5 Department of Neurology, Dong-A University Hospital, Dong-A University College of Medicine, Busan, Korea.
6 Department of Neurology, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea.
7 Department of Neurology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.
8 Department of Neurology, Inje University Sanggye Paik Hospital, Seoul, Korea.
9 Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
10 Department of Neurology, Seoul Medical Center, Seoul, Korea.
11 Department of Neurology, College of Medicine, Kyung Hee University, Seoul, Korea.
12 Department of Neurology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea.
13 Department of Neurology, Samsung Medical center, Sungkyunkwan University School of Medicine, Seoul, Korea.
14 Department of Neurology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, College of Medicine, Seoul National University, Seoul, Korea.
15 Department of Neurology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea.
16 Department of Neurology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
17 Department of Neurology, University of Ulsan College of Medicine, Asan Medical center, Seoul, Korea.
18 Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
19 Department of Neurology, College of Medicine, Yeungnam University, Daegu, Korea.
20 Department of Neurology, CHA University Bundang Medical Center, CHA University, Seongnam, Korea.
21 Department of Neurology, Hanyang University College of Medicine, Seoul, Korea.