1. Department of Neurosurgery, Graduate School of Medical and Dental Sciences Kagoshima University Kagoshima Japan
2. Department of Pathology, Graduate School of Medical and Dental Sciences Kagoshima University Kagoshima Japan
3. Center for Human Genome and Gene Analysis Kagoshima University Hospital Kagoshima Japan
4. Department of Neurosurgery, Graduate School of Medical Sciences Kyushu University Fukuoka Japan