1. Ibaraki Prefectural University of Health Sciences, Ibaraki, Japan.
2. Proton Medical Research Center, University of Tsukuba, Ibaraki, Japan.
3. Stella Pharma Co. Ltd., Osaka, Japan.
4. Department of Radiation Oncology, Southern Tohoku Hospital, Fukushima, Japan.
5. Division of Boron Neutron Capture Therapy Medical Research, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Tokyo, Japan.
6. Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Osaka, Japan.