1. Department of Surgery; Kitakyushu Municipal Yahata Hospital; 4-18-1 Nishihon-machi, Yahatahigashi-ku Kitakyushu Fukuoka 805-8534 Japan
2. Department of Surgery; Teikyo University School of Medicine; Tokyo Japan
3. Section of Hepatobiliary and Pancreatic Surgery; Washington University in Saint Louis School of Medicine; Saint Louis MO USA
4. Department of Surgery; University of Cincinnati College of Medicine; Cincinnati OH USA
5. Department of Surgery; Indiana University School of Medicine; Indianapolis IN USA
6. Clinical Surgery; The University of Edinburgh; Edinburgh UK
7. Department of Surgery; University of Heidelberg; Heidelberg Germany
8. Clinical Research Center Kaken Hospital; International University of Health and Welfare; Ichikawa Japan
9. Department of Surgical Oncology and Gastroenterological Surgery; Sapporo Medical University School of Medicine; Sapporo Japan
10. Department of Surgery, Institute of Gastroenterology; Tokyo Women's Medical University; Tokyo Japan
11. Department of Gastroenterological Surgery; Fukuoka University School of Medicine; Fukuoka Japan
12. Department of Emergency and Critical Care Medicine; Ichinomiya Municipal Hospital; Ichinomiya Japan
13. Center for Clinical Infectious Diseases; Jichi Medical University; Tochigi Japan
14. Department of Surgery; Toho University Medical Center Ohashi Hospital; Tokyo Japan
15. Department of Gastroenterology; Ogaki Municipal Hospital; Ogaki Japan
16. General Internal Medicine Nagoya Daini Red Cross Hospital; Nagoya Japan
17. Faculty of Medicine; The Chinese University of Hong Kong; Shatin Hong Kong
18. Department of Internal Medicine, Asan Medical Center; University of Ulsan; Seoul Korea