1. Department of Neurology, Korea University Guro Hospital, Seoul, Korea.
2. Department of Neurology, Ewha Womans University Mokdong Hospital, Seoul, Korea.
3. Department of Neurology, Inje University Ilsan Paik Hospital, Goyang, Korea.
4. Department of Neurology and Cerebrovascular Disease Center, Seoul National University Bundang Hospital, Seongnam, Korea.
5. Department of Neurology, Uijeongbu Eulji Medical Center, Eulji University, Uijeongbu, Korea.
6. Department of Neurology, Nowon Eulji Medical Center, Eulji University, Seoul, Korea.
7. Department of Neurology, Seoul Medical Center, Seoul, Korea.
8. Department of Neurology, Soonchunhyang University Seoul Hospital, Seoul, Korea.
9. Department of Neurology, Dongguk University Ilsan Hospital, Goyang, Korea.
10. Department of Neurology, Hallym Neurological Institute, Hallym University Sacred Heart Hospital, Anyang, Korea.
11. Department of Neurology, Daejeon Eulji Medical Center, Eulji University, Daejeon, Korea.
12. Department of Neurology, Yeungnam University Medical Center, Daegu, Korea.
13. Department of Neurology, Dong-A University Hospital, Busan, Korea.
14. Department of Neurology, Chonnam National University Hospital, Gwangju, Korea.
15. Department of Neurology, Jeju National University Hospital, Jeju, Korea.
16. AstraZeneca, Gothenburg, Sweden.
17. AstraZeneca, Cambridge, UK.
18. Department of Biostatistics, Korea University College of Medicine, Seoul, Korea.
19. BK21 FOUR Program in Learning Health Systems, Korea University, Seoul, Korea.
20. Clinical Research Center, Asan Institute for Life Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.