1. Department of Neurosurgery, Kobe City Medical Center General Hospital
2. Department of Neurosurgery, Kobe City Medical Center West Hospital
3. Department of Neurosurgery, Hyogo Emergency Medical Center and Kobe Red Cross Hospital
4. Department of Neurosurgery, Kobe City Nishi-Kobe Medical Center
5. Department of Neurosurgery, Kobe University Graduate School of Medicine
6. Department of Neurosurgery, Japan Community Health Care Organization Kobe Central Hospital
7. Department of Neurosurgery, Shinsuma General Hospital
8. Department of Neurosurgery, Konan Medical Center
9. Department of Neurosurgery, Kobe Ekisaikai Hospital
10. Department of Neurosurgery, Kosei Hospital
11. Department of Neurosurgery, Shinko Memorial Hospital
12. Department of Neurosurgery, Cerebrovascular Research Institute, Yoshida Hospital
13. Department of Neurovascular Research, Kobe City Medical Center General Hospital