1. Department of Surgery and Science; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
2. Department of Gastroenterology and Hepatology; Graduate School of Medicine; Kyoto University; Kyoto Japan
3. Division of Artificial Organ and Transplantation; Department of Surgery; University of Tokyo; Tokyo Japan
4. Department of Surgery; Graduate School of Biomedical Sciences; Hiroshima University; Hiroshima Japan
5. Department of Gastroenterological Surgery I; Hokkaido University Graduate School of Medicine; Hokkaido Japan
6. Department of Surgery; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
7. Department of Surgery; Division of Hepato-Biliary-Pancreatic Surgery; Kobe University Graduate School of Medicine; Kobe Japan
8. Department of Transplantation and Pediatric Surgery; Postgraduate School of Medical Science; Kumamoto University; Kumamoto Japan
9. Department of Surgery; Keio University School of Medicine; Tokyo Japan
10. Department of Surgery; University of Tokushima; Tokushima Japan
11. Department of Surgery; School of Medicine; The Jikei University; Tokyo Japan
12. Department of Surgery; Asahikawa Medical University; Asahikawa Japan
13. Department of Surgery; Graduate School of Medicine; Kyoto University; Kyoto Japan