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 Advanced Radiological Imaging, Graduate School of Medical and Dental Sciences, Kagoshima University , Kagoshima , Japan
5. Department of Radiology, Graduate School of Medical and Dental Sciences, Kagoshima University , Kagoshima , Japan
6. Department of Neurosurgery, Graduate School of Medical Sciences, Kyushu University , Fukuoka , Japan