1. Department of Neurosurgery, Graduate School of Medical and Dental Sciences, Kagoshima University
2. Department of Neurosurgery, Kumamoto University
3. Department of Neurosurgery, National Hospital Organization Kagoshima Medical Center
4. Department of Surgery, Kokubu Seikyo Hospital
5. Department of Surgery, Odashiro Commemoration Clinic
6. Department of Pathology, National Hospital Organization Kagoshima Medical Center