1. Division of Radiation Oncology, Department of Radiology,Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital
2. Department of Radiation Oncology, Hiroshima University Graduate School of Biomedical and Health Sciences
3. National Institute for Quantum and Radiological Science and Technology
4. Department of Gastroenterology, University of Tsukuba
5. Department of Colorectal Surgery, National Cancer Center Hospital East
6. Department of Radiation Oncology, National Cancer Center Hospital East
7. Department of Radiation Oncology, Kobe Proton Center
8. Department of Radiation Oncology, School of Medicine, Tokyo Women's Medical University