1. Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan
2. Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka, Japan
3. Southern Tohoku BNCT Research Center, Koriyama, Fukushima, Japan
4. Department of Neurosurgery, Southern Tohoku Research Institute for Neuroscience, Koriyama, Fukushima, Japan
5. Department of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan