1. Department of Gastrointestinal and Pediatric Surgery Tokyo Medical University Tokyo Japan
2. Department of Surgery Istituto Fondazione Poliambulanza Brescia Italy
3. First Department of Surgery Kagoshima University School of Medicine Kagoshima Japan
4. Department of Hepatopancreatobiliary and Transplant Surgery Singapore General Hospital Singapore City Singapore
5. Department of Surgery Emory University School of Medicine Winship Cancer Institute Atlanta GA USA
6. Department of Surgery Nippon Medical School Tokyo Japan
7. Department of Gastrointestinal and Hepato‐Pancreato‐Biliary Surgical Oncology Tata Memorial Hospital Mumbai India
8. Department of Surgery Seoul National University Bundang Hospital Seoul National University Seoul Korea
9. Department of Hepatobiliary and Pancreatic Surgery Division National Cancer Center Hospital Tokyo Japan
10. Department of Surgery and Oncology Graduate School of Medical Sciences Kyushu University Fukuoka Japan
11. Department of Gastroenterological Surgery Yokohama City University Graduate School of Medicine Yokohama Japan