1. Departments of Internal Medicine, Niigata Prefectural Central Hospital
2. Departments of Surgery, Niigata Prefectural Central Hospital
3. Departments of Neurosurgery, Niigata Prefectural Central Hospital
4. Departments of Radiology, Niigata Prefectural Central Hospital
5. Departments of pathology, Niigata Prefectural Central Hospital
6. Department of Neurosurgery, Niigata University School of Medicine