1. Department of Neurology, National Cerebral and Cardiovascular Center
2. Department of Stroke Neurology, National Hospital Organization Osaka National Hospital
3. Department of Neurosurgery, Kobe City Medical Center General Hospital
4. Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center
5. Department of Neurology, Kumamoto City Hospital
6. Department of Stroke and Cerebrovascular Medicine, Kyorin University
7. Department of Neurosurgery, Gifu University Graduate School of Medicine
8. Graduate School of Business Administration, Keio University
9. Department of Neurology, Nippon Medical School Hospital
10. Department of Neurosurgery, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
11. Department of Neurosurgery, Tsukuba University
12. Department of Neurosurgery, Kyoto University
13. Department of Neurosurgery, Iwate Medical University
14. Departments of Cerebrovascular Medicine and Neurology, National Hospital Organization Kyushu Medical Center
15. Department of Neurosurgery, Kyorin University
16. Department of Neurosurgery, Tokushima University Graduate School of Medicine
17. Department of Neurosurgery, Tohoku University Graduate School of Medicine
18. Department of Neurosurgery, Kawasaki Medical School
19. Department of Neurosurgery, Hyogo College of Medicine
20. Department of Neurology, Kobe City Medical Center General Hospital