1. From the Department of Neurology, Chonnam National University Hospital, Gwangju, Korea (J.-T.K., M.-S.P., K.-H. Choi, K.-H. Cho)
2. Department of Neurology, Cerebrovascular Center, Seoul National University Bundang Hospital, Seongnam, Korea (B.J.K., H.-J.B.)
3. Department of Neurology, Nowon Eulji Medical Center, Eulji University, Seoul, Korea (J.-M.P., K.K.)
4. Department of Neurology, Eulji University Hospital, Eulji University, Daejeon, Korea (S.J.L., J.G.K.)
5. Department of Neurology, Dong-A University Hospital, Busan, Korea (J.-K.C., D.-H.K., H.-W.N.)
6. Department of Neurology, Seoul Medical Center, Korea (T.H.P., S.-S.P.)
7. Department of Neurology, Soonchunhyang University Hospital, Seoul, Korea (K.B.L.)
8. Department of Neurology, Yeungnam University Hospital, Daegu, Korea (Jun Lee)
9. Department of Neurology, Ilsan Paik Hospital, Inje University, Goyang, Korea (K.-S.H.,Y.-J.C., H.-K.P.)
10. Department of Neurology, Hallym University Sacred Heart Hospital, Anyang, Korea (B.-C.L., K.-H.Y., M.S.O.)
11. Department of Neurology, Dongguk University Ilsan Hospital, Goyang, Korea (D.-E.K., W.-S.R.)
12. Department of Neurology, Jeju National University Hospital, Jeju National University School of Medicine, Korea (J.C.C.)
13. Department of Neurology, Ulsan University College of Medicine, Korea (J.-H.K., W.-J.K.)
14. Department of Neurology, Chungbuk National University Hospital, Cheongju, Korea (D.-I.S., M.-J.Y.)
15. Department of Neurology, Keimyung University Dongsan Medical Center, Daegu, Korea (S.I.S., J.-H.H.)
16. Clinical Research Center, Asan Medical Center, Seoul, Korea (J.S.L.)
17. Department of Biostatistics, Korea University College of Medicine, Seoul (Juneyoung Lee)
18. Department of Neurology and Comprehensive Stroke Center, David Geffen School of Medicine at the University of California Los Angeles (J.L.S.)
19. Dell Medical School, University of Texas at Austin (S.C.J.).