1. Department of Gastroenterological and Transplant Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University , Hiroshima , Japan
2. Medical Centre for Translational and Clinical Research, Hiroshima University Hospital , Hiroshima , Japan
3. Department of Biostatistics, Clinical Research Centre in Hiroshima, Hiroshima University Hospital , Hiroshima , Japan
4. Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University , Fukuoka , Japan
5. Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Graduate School of Medicine, Kyoto University , Kyoto , Japan
6. Department of Surgery, Graduate School of Biomedical Sciences, Nagasaki University , Nagasaki , Japan
7. Department of Paediatric Surgery and Transplantation, Graduate School of Medical Sciences, Kumamoto University , Kumamoto , Japan
8. Division of Artificial Organ and Transplantation, Department of Surgery, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan
9. Department of Gastroenterological Surgery, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University , Okayama , Japan
10. Division of Hepato-Biliary-Pancreatic and Transplantation Surgery, Japanese Red Cross Medical Centre , Tokyo , Japan
11. Department of Surgery, School of Medicine, Keio University , Tokyo , Japan
12. Department of Organ Transplantation and General Surgery, Kyoto Prefectural University of Medicine , Kyoto , Japan
13. Department of Transplantation Surgery, Nagoya University Hospital , Nagoya , Japan
14. Department of Surgery, School of Medicine, Iwate Medical University , Yahaba , Japan
15. Department of Hepato-Biliary-Pancreatic Surgery, Institute of Gastroenterology, Tokyo Women's Medical University , Tokyo , Japan
16. Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University , Osaka , Japan
17. Department of Hepato-Biliary-Pancreatic and Breast Surgery, Graduate School of Medicine, Ehime University , Toon , Japan
18. Division of Gastroenterology, Department of Internal Medicine, Graduate School of Medicine, Kobe University , Kobe , Japan
19. Organ Transplantation Centre, National Centre for Child Health and Development , Tokyo , Japan
20. Department of Digestive and Transplantation Surgery, Tokyo Medical University Hachioji Medical Centre , Tokyo , Japan
21. Division of Gastroenterological, Hepato-Biliary-Pancreatic, Transplantation, and Paediatric Surgery, Department of Surgery, Shinshu University , Matsumoto , Japan
22. Department of Internal Medicine, Institute of Gastroenterology, Tokyo Women's Medical University , Tokyo , Japan
23. Department of Gastroenterological, Breast, and Endocrine Surgery, Graduate School of Medicine, Yamaguchi University , Ube , Japan
24. Department of Diagnostic Pathology, Kyoto University Hospital , Kyoto , Japan
25. Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Graduate School of Medicine, Kobe University , Kobe , Japan
26. Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University , Moroyama , Japan
27. Department of Surgery, Osaka International Cancer Institute , Osaka , Japan