1. From the Department of Neurology (J.Y.C.), Asan Medical Center, Seoul, Korea
2. Clinical Research Center (J.S.L.), Asan Medical Center, Seoul, Korea
3. Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Korea (B.J.K., H.-J.B., M.-K.H.)
4. Department of Neurology, Chonnam National University Hospital, Gwangju, Korea (J.-T.K.)
5. Department of Neurology, Yeungnam University Hospital, Daegu, Korea (J.L.)
6. Department of Neurology, Dong-A University Hospital, Busan, Korea (J.K.C., D.-H.K.)
7. Department of Neurology, Inje University Ilsan Paik Hospital, Goyang, Korea (Y.-J.C., K.-S.H.)
8. Department of Neurology, Eulji University Hospital, Daejeon, Korea (S.J.L.)
9. Department of Neurology, Nowon Eulji Medical Center, Eulji University, Seoul, Korea (J.-M.P.)
10. Department of Neurology, Hallym University College of Medicine, Pyeongchon, Korea (B.-C.L., M.S.O.)
11. Department of Neurology, Dongguk University Ilsan Hospital, Goyang, Korea (D.-E.K.)
12. Department of Neurology, Soonchunhyang University Hospital, Seoul, Korea (K.B.L.)
13. Department of Neurology, Seoul Medical Center, Korea (T.H.P.)
14. Department of Neurology, Jeju National University Hospital, Korea (J.C.C.)
15. Department of Neurology, Chungbuk National University Hospital, Cheongju, Korea (D.-I.S.)
16. Department of Neurology, Ulsan University College of Medicine, Korea (W.-J.K.)
17. Department of Neurology, Keimyung University Dongsan Medical Center, Daegu, Korea (S.-I.S.).