[1] National Cancer Center Hospital,Gastrointestinal Medical Oncology Division
[2] National Cancer Center Hospital East,Department of Gastrointestinal Oncology
[3] Osaka General Medical Center,Department of Surgery
[4] Iwate Medical University School of Medicine,Department of Surgery
[5] Saitama Cancer Center,Department of Gastroenterology
[6] Kanagawa Cancer Center,Department of Gastroenterology
[7] Chiba Cancer Center,Clinical Trial Promotion Department
[8] National Hospital Organization Osaka National Hospital,Department of Surgery
[9] Sakai City Medical Center,Department of Surgery
[10] Ibaraki Prefectural Central Hospital,Department of Gastroenterology
[11] Jichi Medical University Hospital,Department of Clinical Oncology
[12] Aichi Cancer Center Hospital,Department of Clinical Oncology
[13] National Kyushu Cancer Center,Department of Gastrointestinal and Medical Oncology
[14] Hiroshima City Hiroshima Citizens Hospital,Department of Surgery
[15] Toranomon Hospital,Department of Medical Oncology
[16] Cancer Institute Hospital of the Japanese Foundation for Cancer Research,Department of Gastroenterology
[17] Hirosaki University Graduate School of Medicine,Department of Medical Oncology
[18] Osaka Medical College Hospital,Cancer Chemotherapy Center
[19] Yamagata Prefectural Central Hospital,Department of Surgery
[20] Kouseiren Takaoka Hospital,Department of Surgery
[21] Shizuoka Cancer Center,Division of Gastrointestinal Oncology
[22] Hamamatsu University School of Medicine,Oncology Center
[23] Taiho Pharmaceutical. Co.,Data Science Department
[24] Ltd.,Department of Biomedical Statistics and Bioinformatics
[25] Kyoto University Graduate School of Medicine,Department of Gastroenterology
[26] Kitasato University School of Medicine,undefined