1. Department of Neurosurgery, Osaka International Cancer Institute, Osaka, Japan
2. Department of Diagnostic Pathology and Cytology, Osaka International Cancer Institute, Osaka, Japan
3. Department of Biomedical Research and Innovation, Institute for Clinical Research, Osaka National Hospital, National Hospital Organization, Osaka, Japan
4. Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Japan