1. Department of Neurology National Cerebral and Cardiovascular Center Osaka Japan
2. Department of Neurology, Graduate School of Medical Sciences Kumamoto University Kumamoto Japan
3. Department of Neurology Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology Tokyo Japan
4. Department of Neurology Nakamura Memorial Hospital Sapporo Japan
5. Clinic of Minami‐ichijyo Neurology Sappro Japan
6. Department of Neurology Kobe City Medical Center General Hospital Kobe Japan
7. Department of Neurology St. Mary's Hospital Fukuoka Japan
8. Department of Neurology National Hospital Organization Okayama Medical Center Okayama Japan
9. Department of Neurology Toyota Memorial Hospital Toyota Japan
10. Department of Neurology Kyoto University Graduate School of Medicine Kyoto Japan
11. Departments of Preventive Medicine and Epidemiology National Cerebral and Cardiovascular Center Osaka Japan
12. Department of Cerebrovascular Medicine National Cerebral and Cardiovascular Center Osaka Japan
13. Division of Neurology Kobe University Graduate School of Medicine Kobe Japan
14. Department of Epilepsy, Movement Disorders and Physiology Kyoto University Graduate School of Medicine Kyoto Japan