1. Department of Neurology, Keimyung University School of Medicine, Daegu, South Korea (H.P., S.-I.S., J.-H.H.).
2. Department of Neurology (Y.D.K., H.S.N., J.N.H., H.W.L., I.H.L., M.B., J.H.H.), Yonsei University College of Medicine, Seoul, South Korea.
3. Department of Neurology, Yongin Severance Hospital (J.Y., J.K.), Yonsei University College of Medicine, Seoul, South Korea.
4. Department of Radiology (B.M.K., D.J.K.), Yonsei University College of Medicine, Seoul, South Korea.
5. Department of Neurology, Samsung Medical Center (O.Y.B., W.-K.S., J.-W.C.), Sungkyunkwan University School of Medicine, Seoul, South Korea.
6. Department of Neurology, Gangnam Severance Hospital, Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, South Korea (K.Y.L., Y.H.J.).
7. Department of Research Affairs, Biostatistics Collaboration Unit (H.S.L.), Yonsei University College of Medicine, Seoul, South Korea.
8. Department of Neurology, Chosun University School of Medicine, Gwangju, South Korea (S.H.A.).
9. Department of Neurology, Gachon University Gil Medical Center, Incheon, South Korea (D.H.S.).
10. Department of Neurology, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, South Korea (H.-Y.C.).
11. Department of Neurology, Pusan National University Hospital, Pusan National University School of Medicine, Busan, South Korea (H.-J.C.).
12. Department of Neurology, Kangbuk Samsung Hospital (J.-H.B.), Sungkyunkwan University School of Medicine, Seoul, South Korea.
13. Department of Neurology, National Health Insurance Service Ilsan Hospital, Goyang, South Korea (G.S.K., K.-D.S.).
14. Department of Neurology, Yonsei University Wonju College of Medicine, South Korea (S.H.K.).
15. Department of Neurology, Seoul Hospital, College of Medicine, Ewha Womans University, Seoul, South Korea (T.-J.S.).
16. Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, South Korea (S.W.H., J.H.P.).
17. Department of Neurology, Sanbon Hospital, Wonkwang University School of Medicine, Sanbon, South Korea (S.I.L.).