1. Department of Neurosurgery, Kobe City Medical Center General Hospital
2. Department of Neurosurgery, Hyogo College of Medicine
3. Department of Neurosurgery, Graduate School of Medical Sciences, Kyushu University
4. Department of Neurosurgery, National Cerebral and Cardiovascular Center
5. Department of Neurosurgery, National Hospital Organization Sendai Medical Center
6. Department of Neurosurgery, Dokkyo University Saitama Medical Center
7. Neuroendovascular Therapy Center, Aichi Medical University
8. Department of Neurosurgery, Graduate School of Medicine, Kyoto University
9. Clinical and Translational Research Center, Kobe University Hospital
10. Department of Preventive Medicine, National Cerebral and Cardiovascular Center
11. Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center
12. Department of Neurosurgery, University of Tsukuba