[1] Korea Univ, Korea Univ Guro Hosp, Dept Neurol, Coll Med, Seoul, South Korea
[2] Soonchunhyang Univ, Cheonan Hosp, Dept Neurol, Cheonan, South Korea
[3] Korea Univ, Coll Med, Dept Biostat, Seoul, South Korea
[4] Gyeongsang Natl Univ, Changwon Gyeongsang Inst Hlth Sci, Sch Med, Dept Neurol, Chang Won, South Korea
[5] Res Inst & Hosp Natl Canc Ctr, Dept Neurol, Goyang, South Korea
[6] Yonsei Univ, Dept Neurol, Coll Med, Seoul, South Korea
[7] Korea Univ, Korea Coll Med, Dept Neurol, Anam Hosp, Seoul, South Korea
[8] Keimyung Univ, Sch Med, Dept Neurol, Daegu, South Korea
[9] Jeju Natl Univ, Coll Med, Dept Neurol, Cheju, South Korea
[10] Eulji Univ, Dept Neurol, Coll Med, Daejeon, South Korea
[11] Univ Ulsan, Asan Med Ctr, Dept Neurol, Coll Med, Seoul, South Korea
[12] Chungbuk Natl Univ, Coll Med, Dept Neurol, Cheongju, South Korea
[13] Konkuk Univ, Coll Med, Dept Neurol, Seoul, South Korea
[14] Kosin Univ, Coll Med, Dept Neurol, Busan, South Korea
[15] Dong A Univ Hosp, Dept Neurol, Busan, South Korea
[16] Chungnam Natl Univ, Coll Med, Dept Neurol, Daejeon, South Korea
[17] Inje Univ, Coll Med, Dept Neurol, Ilsan, South Korea
[18] Sungkyunkwan Univ, Samsung Med Ctr, Sch Med, Dept Neurol, Seoul, South Korea
[19] Samsung Med Ctr, Neurosci Ctr, Seoul, South Korea
[20] Samsung Adv Inst Hlth Sci & Technol SAIHST, Dept Hlth Sci & Technol, Seoul, South Korea