1. Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
2. Department of Neurology, Gangnam Severance Hospital, Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea.
3. Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea.
4. Department of Neurology, National Medical Center, Seoul, Korea.
5. Department of Neurology, Pusan National University Hospital, Pusan National University College of Medicine and Biomedical Research Institute, Busan, Korea.
6. Department of Neurology, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea.
7. Department of Neurology, Yonsei University Wonju College of Medicine, Wonju, Korea.
8. Department of Neurology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea.
9. Department of Neurology, Chosun University School of Medicine, Gwangju, Korea.
10. Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
11. Department of Neurology, Konyang University College of Medicine, Daejeon, Korea.
12. Department of Neurology, Changwon Fatima Hospital, Changwon, Korea.
13. Department of Neurology, Kyung Hee University School of Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Korea.
14. Department of Neurology, School of Medicine, Konkuk University, Chungju, Korea.
15. Department of Biostatistics, Yonsei University College of Medicine, Seoul, Korea.
16. Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea.
17. Department of Cardiology, Yonsei University College of Medicine, Seoul, Korea.