1. Hepato‐Biliary‐Pancreatic Surgery Division Department of Surgery Graduate School of Medicine University of Tokyo Tokyo Japan
2. Department of Surgery Hepato‐Biliary Pancreatic Surgery Division National Center for Global Health and Medicine Tokyo Japan
3. Department of Gastroenterology Kanazawa University Hospital Kanazawa Japan
4. Department of Radiology Graduate School of Medicine The University of Tokyo Tokyo Japan
5. Department of Surgery Hirakata Hospital Kansai Medical University Hirakata Japan
6. Department of Hepato‐Biliary‐Pancreatic Surgery Osaka Metropolitan University Graduate School of Medicine Osaka Japan
7. Department of Digestive and Transplant Surgery Tokushima University Hospital Tokushima Japan
8. Department of Gastroenterological, Breast and Endocrine Surgery Yamaguchi University Graduate School of Medicine Yamaguchi Japan
9. Division of Hepato‐Biliary‐Pancreatic Surgery and Transplantation Department of Surgery Graduate School of Medicine Kyoto University Kyoto Japan
10. Department of Medicine and Molecular Science Hiroshima University Hospital Hiroshima Japan
11. Division of Gastroenterology and Hepatobiliary Department of Internal Medicine Hyogo Medical University Nishinomiya Japan
12. Department of Gastroenterology and Hepatology Kindai University Faculty of Medicine Higashi‐osaka Japan
13. Department of Hepatobiliary and Pancreatic Oncology Osaka International Cancer Institute Osaka Japan
14. Department of Gastroenterology and Hepatology Juntendo University Shizuoka Hospital Izunokuni Japan
15. Department of Gastroenterology and Hepatology Musashino Red Cross Hospital Musashino Japan
16. Division of Gastroenterology Department of Medicine Kurume University School of Medicine Kurume Japan
17. Department of Hepatobiliary and Pancreatic Oncology National Cancer Center Hospital East Kashiwa Japan
18. Department of Gastroenterology Kanagawa Cancer Center Yokohama Japan
19. Department of Radiology School of Medicine International University of Health and Welfare Otawara Japan
20. Department of Quantum Medical Technology Kanazawa University Graduate School of Medical Sciences Kanazawa Japan
21. Department of Radiation Oncology University of Tsukuba Faculty of Medicine Tsukuba Japan
22. Radiation Oncology Center Ofuna Chuo Hospital Kamakura Japan
23. Department of Radiology Kobe University Graduate School of Medicine Hyogo Japan
24. Department of Diagnostic Radiology Kofu Kyoritsu Hospital Kofu Japan
25. Department of Biostatistics School of Public Health Graduate School of Medicine The University of Tokyo Tokyo Japan
26. Department of Gastroenterology Graduate School of Medicine The University of Tokyo Tokyo Japan