1. Department of Surgery; Kyoto University; Kyoto Japan
2. Division of Colon and Rectal Surgery; Shizuoka Cancer Center Hospital; Shizuoka Japan
3. Department of Gastroenterological and Pediatric Surgery; Oita University Faculty of Medicine; Oita Japan
4. Department of Gastroenterological Surgery; Cancer Institute Hospital of the Japanese Foundation for Cancer Research; Tokyo Japan
5. Department of Data Science; Institute for Advancement of Clinical and Translational Science; Kyoto University Hospital; Kyoto Japan
6. Gastroenterological Center; Yokohama City University Medical Center; Kanagawa Japan
7. Department of Gastroenterological Surgery; Toranomon Hospital; Tokyo Japan
8. Department of Gastroenterological Surgery; Ishikawa Prefectural Central Hospital; Ishikawa Japan
9. Department of Surgery; Kitasato University School of Medicine; Kanagawa Japan