1. Department of Radiology, Dokkyo Medical University Saitama Medical Center, Saitama, Japan
2. Department of Radiation Oncology, Showa University School of Medicine, Tokyo, Japan
3. Department of International Clinical Development, JCOG Data Center/Operations Office, National Cancer Center Hospital, Tokyo, Japan
4. Department of Radiation Oncology, Kindai University Hospital, Osaka, Japan
5. Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan
6. Division of Radiation Oncology, Saitama Cancer Center, Saitama, Japan
7. Department of Radiation Oncology, Hiroshima University Hospital, Hiroshima, Japan
8. Department of Radiation Oncology, Niigata Cancer Center Hospital, Niigata, Japan
9. Division of Radiation Oncology and Particle Therapy, National Cancer Center Hospital East, Chiba, Japan
10. Department of Radiation Oncology, Japanese Red Cross Wakayama Medical Center, Wakayama, Japan