| Affiliation: | 2. Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, 462-8508, Japan;3. Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo, 679-5165, Japan;4. Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Koriyama, Fukushima, 963-8052, Japan;5. Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Fukui, 910-8526, Japan;11. Department of Radiation Oncology, Hokkaido University Institute of Medicine, Hokkaido, 060-8648, Japan;12. Proton Therapy Center, Aizawa Hospital, Matsumoto, Nagano, 390-8510, Japan;8. Radiation and Proton Therapy Center, Shizuoka Cancer Center, Nagaizumi, Suntou-gun, Shizuoka, 411-8777, Japan;9. Department of Biostatistics, Institute of Medicine, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan |
