1. Pancreatobiliary Cancer Clinic, Department of Surgery, Gangnam Severance Hospital Yonsei University College of Medicine Seoul South Korea
2. Department of Preventive medicine Yonsei University College of Medicine Seoul South Korea
3. Department of Gastroenterological Surgery Yokohama City University School of Medicine Yokohama Japan
4. Department of Surgery and Cancer Research Institute Seoul National University College of Medicine Seoul South Korea
5. Division of Hepatobiliary and Pancreatic Surgery Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine Seoul South Korea
6. Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Severance Hospital Yonsei University College of Medicine Seoul South Korea
7. Center for Liver and Pancreatobiliary cancer National Cancer Center Seoul South Korea
8. Seoul National University Bundang Hospital Seoul National University College of Medicine Goyang South Korea
9. Department of Surgery Jeonbuk National University hospital Jeonju South Korea
10. Department of Hepato‐Biliary‐Pancreatic surgery Osaka City University Graduate School of Medicine Osaka Japan
11. Department of Surgery, Division of Hepato‐Biliary‐Pancreatic Surgery Kobe University Graduate School of Medicine Kobe Japan
12. Department of General Surgery, Graduate School of Medicine Chiba University Chiba Japan
13. Department of Surgery Yeungnam University College of Medicine Daegu South Korea
14. 2nd Department of Surgery Wakayama medical university Wakayama Japan
15. Department of Surgery Toyama Prefectural Central Hospital Toyama Japan
16. Division of Digestive and General Surgery Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
17. Department of Surgery, Biomedical Research Institute, Pusan National University School of Medicine Pusan National University Hospital Busan South Korea
18. Gastrointestinal Surgery Sendai Kousei Hospital Sendai Japan
19. Department of Surgery Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
20. Department of Surgery Yamagata Prefectural Central Hospital Yamagata Japan
21. Department of Gastroenterological and Pediatric Surgery 48 Oita University Faculty of Medicine Yufu Japan
22. Department of Gastroenterological Surgery Fujita Health University Bantane Hospital Fujita Japan
23. Department of Surgery, Graduate School of Medicine Tohoku University Sendai Japan
24. Department of Surgery, St. Vincent’s Hospital, College of Medicine The Catholic University Suwon South Korea
25. Department of Gastroenterological Surgery Kumamoto University Kumamoto Japan
26. Department of Gastroenterological Surgery, Graduate School of Medicine Osaka University Suita Japan
27. Ibaraki Cancer Center Ibaraki Prefectural Central Hospital Ibaraki Japan
28. Department of Surgery Saga University Faculty of Medicine Saga Japan
29. Department of Gastroenterological, Breast and Endocrine Surgery Yamaguchi University Graduate School of Medicine Ube Japan
30. Department of Surgery and Oncology, Graduate School of Medical Sciences Kyushu University Kyushu Japan
31. Department of Surgery Utsunomiya Memorial Hospital Utsunomiya Japan