1. Division of Artificial Organ and Transplantation; Department of Surgery; University of Tokyo; Tokyo Japan
2. Department of Surgery; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
3. Department of Gastroenterological Surgery; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; Okayama Japan
4. Department of Surgery; Institute of Gastroenterology; Tokyo Women's Medical University; Tokyo Japan
5. Department of Surgery; Osaka University Graduate School of Medicine; Osaka Japan
6. Department of Gastroenterological Surgery I; Hokkaido University Graduate School of Medicine; Hokkaido Japan
7. Department of Surgery; Keio University School of Medicine; Tokyo Japan
8. Department of Surgery; Institute of Health Bioscience; University of Tokushima Graduate School; Tokushima Japan
9. Division of Hepato-Biliary-Pancreatic Surgery; Department of Surgery; Kobe University Graduate School of Medicine; Kobe Japan
10. Department of Surgery; Jikei University School of Medicine; Tokyo Japan
11. Department of Surgery and Science; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
12. The Research Center for Hepatitis and Immunology; National Center for Global Health and Medicine; Ichikawa Japan
13. Department of Pharmacy; National Cancer Center Hospital; School of Pharmaceutical Sciences; Kitasato University Tokyo; Japan