1. Department of Human Pathology Gunma University Graduate School of Medicine Maebashi Japan
2. Division of Brain Tumor Translational Research National Cancer Center Research Institute Tokyo Japan
3. Department of Pediatrics The University of Tokyo Tokyo Japan
4. Department of Neurosurgery Gunma University Graduate School of Medicine Maebashi Japan
5. Department of Hematology/Oncology Saitama Children's Medical Center Saitama Japan
6. Division of Neurosurgery Shizuoka Cancer Center Nagaizumi Japan
7. Division of Pathology Shizuoka Cancer Center Nagaizumi Japan
8. Department of Brain Disease Translational Research Juntendo University Faculty of Medicine Tokyo Japan