1. From the Department of Neurosurgery, Brain Research Institute, Niigata University, Niigata, Japan
2. Department of Pediatrics, Oita University Faculty of Medicine, Yufu, Japan
3. Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Japan
4. Department of Pathology, Johns Hopkins School of Medicine, Baltimore, Maryland
5. Department of Pathology, Brain Research Institute, Niigata University
6. Department of Pathology, Public Tomioka General Hospital, Tomioka, Japan
7. Department of Human Pathology, Gunma University, Maebashi, Japan
8. Department of Neurosurgery, Yokohama City University, Yokohama, Japan
9. Department of Pathology and Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusettes
10. Broad Institute of Harvard and MIT, Cambridge, Massachusettes
11. Department of Neurosurgery, Hospital for Sick Children, Toronto, Canada