1 Department of Visceral Surgery, Lausanne University Hospital CHUV, University of Lausanne (UNIL), Lausanne, Switzerland.
2 Department of Gastroenterology and Hepatology, Erasmus Medical Centre, Rotterdam, the Netherlands.
3 Department of Gastroenterology and Hepatology, Ikazia Hospital, Rotterdam, the Netherlands.
4 Department of Hepatobiliary and General Surgery, Humanitas University, Humanitas Clinical and Research Centre, IRCCS, Rozzano, Milan, Italy.
5 Division of Hepatopancreatobiliary Surgery, Department of Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
6 Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital, National Cancer Centre Singapore and Duke-National University of Singapore Medical School, Singapore, Singapore.
7 Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.
8 Department of Surgical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
9 Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Carolinas Medical Centre, Charlotte, North Carolina, USA.