[1] Kyung Hee Univ, Grad Sch, Dept Neurol, Seoul, South Korea
[2] Seoul Natl Univ, Bundang Hosp, Songnam, South Korea
[3] Seoul Med Ctr, Seoul, South Korea
[4] Soonchunhyang Univ Hosp, Seoul, South Korea
[5] Hallym Univ, Sacred Heart Hosp, Anyang, South Korea
[6] Dong A Univ Hosp, Pusan, South Korea
[7] Yeungnam Univ, Med Ctr, Daegu, South Korea
[8] Eulji Univ, Sch Med, Eulji Univ Hosp, Daejeon, South Korea
[9] Eulji Univ, Eulji Gen Hosp, Seoul, South Korea
[10] Inje Univ, Ilsan Paik Hosp, Goyang, South Korea
[11] Jeju Natl Univ, Jeju, South Korea
[12] Chonnam Natl Univ Hosp, Gwangju, South Korea
[13] Dongguk Univ, Ilsan Hosp, Goyang, South Korea
[14] Univ Ulsan, Coll Med, Ulsan Univ Hosp, Ulsan, South Korea
[15] Chungbuk Natl Univ, Coll Med, Cheongju, South Korea
[16] Korea Univ, Dept Biostat, Coll Med, Seoul, South Korea
[17] Asan Med Ctr, Clin Res Ctr, Seoul, South Korea
[18] Michigan State Univ, Dept Translat Sci & Mol Med, Coll Human Med, Grand Rapids, MI USA
[19] Mercy Hlth Hauenstein Neurosci, Grand Rapids, MI USA