*Department of Surgery and Transplantation, University Hospital of Zurich, Zurich, Switzerland†HPB and Transplant Unit, St. James's University Hospital, Leeds, UK‡Department of Surgery, McGill University/McGill University Health Centre, Montreal, Quebec, Canada§Department of Surgery, Hôpital Beaujon, Université Paris Nord Val de Seine, Clichy, France¶Department of Surgery at UZ Gent, Gent, Belgium||Department of Clinical Medicine, University of Bergen, Department of Gastrointestinal Surgery, Stavanger University Hospital, Stavanger, Norway**Section for Surgical Pathophysiology, The Juliane Marie Centre, Copenhagen Denmark††Trinity Centre for Health Sciences, St. James's Hospital, Clinical Surgery, Dublin, Ireland‡‡Department of Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden§§Department of Surgery, University Medical Center Utrecht, Utrecht, the Netherlands¶¶Department of General and Digestive Surgery, Bellvitge University Hospital, University of Barcelona and IDIBELL, Barcelona, Spain||||Department of HPB and Transplant Surgery, Hospital Curry Cabral, Lisboa, Portugal***Department of Surgery, Medical University of Vienna, Vienna, Austria†††Department of Thoracic Surgery, University Hospital Leuven, Leuven, Belgium‡‡‡Department of Surgery, 2nd Medical Faculty, Charles University and Central Military Hospital, Prague, Czech Republic§§§Department of General and Visceral Surgery, Frankfurt University Hospital and Clinics, Frankfurt am Main, Germany¶¶¶Surgical Oncology Program, Liver and Pancreas Unit, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada||||||Division of Minimally Invasive Surgery, University of Michigan Health Systems - Ann Arbor, MI****Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Faculty of Electronics and Information Technology Warsaw University of Technology, Warsaw, Poland††††Surgical Department, Petz Aladár County Teaching Hospital, Györ, Hungary‡‡‡‡Department of Surgery and Transplantation, University Hospital Bologna, Bologna, Italy§§§§General Surgery and Liver Transplantation, Fundeni Clinical Institute, Bucharest, Romania¶¶¶¶Department of Surgery, Helsinki University, Helsinki, Finland||||||||Department of Surgery, Laiko General Hospital of Athens, Athens, Greece*****Department of Plastic Surgery, Helsinki University Hospital, Helsinki, Finland.