1. Department of Neurosurgery, Fujita Health University, Toyoake, Japan
2. Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
3. Department of Radiology, Fujita Health University, Toyoake, Japan
4. Department of Neurosurgery, Keio University, Tokyo, Japan
5. Department of Pathology, Fujita Health University, Toyoake, Japan