1 Department of Surgery, University Hospital Southampton, Southampton, UK.
2 Department of Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.
3 Cancer Center Amsterdam, Amsterdam, The Netherlands.
4 Department of Surgery, Instituto Ospedale Fondazione Poliambulanza, Brescia, Italy.
5 Department of Surgery, Ohio State University, Columbus, OH, USA.
6 Department of Surgery, San Raffaele Hospital, Milan, Italy.
7 Department of Surgery, University Hospital Naples, Naples, Italy.
8 Hepatobiliary and Abdominal Transplantation Surgery, Department of Experimental and Clinical Medicine, Riuniti Hospital, Polytechnic University of Marche, Ancona, Italy.
9 Department of Surgery, Oncology and Gastroenterology, Hepatobiliary Surgery and Liver Transplantation Unit, Padova University Hospital, Padua, Italy.
10 Department of Surgery, University Medical Center Groningen, Groningen, The Netherlands.
11 Department of Surgery, Temple University Hospital, Philadelphia, PA, USA.
12 The Intervention Center and Department of HPB Surgery, Oslo University Hospital and Institute for Clinical Medicine, Oslo, Norway.
13 Department of Surgery, Mount Sinai Medical Center, New York, NY, USA.
14 Dutch Institute for Clinical Auditing, Scientific Bureau, Leiden, The Netherlands.
15 Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands.
16 Department of Surgery, Netherlands Cancer Institute, Amsterdam, The Netherlands.
17 Department of Surgery, University of Verona, Verona, Italy.
18 Department of Hepato-Pancreato-Biliary and Liver Transplant Surgery, Queen Elizabeth University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.
19 Department of Surgery, Rutgers Cancer Institute, New Brunswick, NJ, USA.
20 Department of Surgery, University Hospital Southampton, Southampton, UK. abuhilal9@gmail.com.
21 Department of Surgery, Instituto Ospedale Fondazione Poliambulanza, Brescia, Italy. abuhilal9@gmail.com.
22 Department of Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands. m.g.besselink@amsterdamumc.nl.
23 Cancer Center Amsterdam, Amsterdam, The Netherlands. m.g.besselink@amsterdamumc.nl.