1. Department of Surgery; Osaka University Graduate School of Medicine; Suita; Osaka; Japan
2. Graduate School of Medicine; Hiroshima University; Hiroshima; Japan
3. Yokohama Rosai Hospital; Yokohama; Japan
4. Department of Diagnostic Pathology, Graduate School of Medicine; Kyoto University; Kyoto; Japan
5. Department of Pediatric Surgery; Fujita Health University; Nagoya; Japan
6. Division of Digestive and General Surgery; Niigata University Graduate School of Medical and Dental Sciences; Niigata; Japan
7. Division of Gastroenterology and Hepatology; Juntendo University School of Medicine Shizuoka Hospital; Shizuoka; Japan
8. Department of Surgery; Nagasaki University Graduate School of Biomedical Science; Nagasaki; Japan
9. Department of Surgery; Keio University School of Medicine; Tokyo; Japan
10. Department of Internal Medicine, Division of Hepatology and Gastroenterology; Shinshu University School of Medicine; Matsumoto; Japan
11. Division of Hepato-Biliary-Pancreatic and Transplantation Surgery, Department of Surgery; Graduate School of Medicine, University of Tokyo; Tokyo; Japan
12. Department of Surgery; Shinshu University School of Medicine; Matsumoto; Japan
13. Division of Advanced Surgical Science and Technology; Tohoku University; Sendai; Japan
14. Department of Surgery and Science; Graduate School of Medical Sciences, Kyushu University; Fukuoka; Japan
15. Department of Surgery; Graduate School of Medicine, Kyoto University; Kyoto; Japan
16. Department of Gastroenterological Surgery, Transplant, and Surgical Oncology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; Okayama; Japan
17. Department of Surgery; Kidney Center, Tokyo Women's Medical University; Tokyo; Japan