1Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, 1-1-1 Honjo, Kumamoto 860-8556, Japan
2Department of Surgery, Teikyo University School of Medicine, Tokyo, Japan
3Mie University School of Medicine, Mie, Japan
4Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
5First Department of Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
6Department of Emergency Medicine and Critical Care, Nagoya University School of Medicine, Nagoya, Japan
7Department of Surgery, Indiana University School of Medicine, Indianapolis, USA
8Department of Surgery, Washington University in St Louis and Barnes-Jewish Hospital, St Louis, USA
9Department of Gastrointestinal Surgery, Medical College of Georgia, Georgia, USA
10Department of Surgery, University of Buenos Aires, Buenos Aires, Argentina
11Department of Surgery, Academic Medical Center, Amsterdam, The Netherlands
12Department of Surgery, Division of Trauma and Critical Care, University of Cincinnati College of Medicine, Cincinnati, USA
13Department of Digestive Surgery and Transplantation, Hospital Beaujon, Clichy, France
14Department of Internal Medicine, Evangelisches Krankenhaus Düsseldorf, Düsseldorf, Germany
15Department of Surgery, University of Heidelberg, Heidelberg, Germany
16Department of Surgery, The University of Hong Kong, Hong Kong, China
17Division of HPB Surgery, Yuan’s General Hospital, Taoyuan, Taiwan
18Division of Surgical and Specialty Services, Flinders Medical Centre, Adelaide, Australia
19Department of Surgery, Tan Tock Seng Hospital / Hepatobiliary Surgery, Medical Centre, Singapore, Singapore
20Department of Surgery, Philippine General Hospital, University of the Philippines, Manila, Philippines
21Department of General and HPB Surgery, Loreto Nuovo Hospital, Naples, Italy
22Department of Surgery, The University of Auckland, Auckland, New Zealand
23First Department of Surgery, Agia Olga Hospital, Athens, Greece
