1. Department of Neurosurgery, Kobe City Medical Center General Hospital
2. Mie University
3. Gifu University
4. Nakamura Memorial Hospital
5. Sendai Medical Center
6. Konan Hospital
7. Niigata University
8. Tachikawa Hospital
9. Mito Medical Center
10. Chiba Emergency Medical Center
11. Jichi Medical University
12. Jikei University
13. Toranomon Hospital
14. Juntendo University
15. Toyama University
16. Nagoya University
17. Wakayama Medical University
18. Osaka City General Hospital
19. Osaka University
20. Okayama University
21. Tokushima University
22. Kokura Memorial Hospital
23. Fukuoka University Chikushi Hospital
24. Kurume University
25. Dokkyo University Koshigaya Hospital
26. Institue of Biomedical Research and Innovation