1. Department of Surgery, Poliambulanza Foundation Hospital , Brescia , Italy
2. Department of Surgery, Amsterdam UMC location, University of Amsterdam , Amsterdam , the Netherlands
3. Cancer Centre Amsterdam, Cancer Treatment and Quality of Life , Amsterdam , the Netherlands
4. Hepatobiliary Surgery Division, IRCCS San Raffaele Hospital , Milan , Italy
5. Department of Surgery, Oncology and Gastroenterology, Hepatobiliary Surgery and Liver Transplantation Unit, Padua University Hospital, Padua , Italy
6. Department of General and Oncological Surgery, Umberto I Mauriziano Hospital , Turin , Italy
7. Hepatobiliary and Abdominal Transplantation Surgery, Department of Experimental and Clinical Medicine, Riuniti Hospital, Polytechnic University of Marche , Ancona , Italy
8. Liver Unit, Queen Elizabeth Hospital , Birmingham , UK
9. Department of Surgery, University of Verona , Verona , Italy
10. Department of Surgery, University Hospital Southampton NHS Foundation Trust , Southampton , UK
11. Intervention Centre and Department of Hepatopancreatobiliary Surgery, Oslo University Hospital and Institute of Medicine, University of Oslo , Oslo , Norway
12. Servei de Cirurgia General i Digestiva, Hospital Doctor Josep Trueta de Girona , Girona, Catalonia , Spain
13. Department of Digestive and Hepatobiliary/Pancreatic Surgery, Groeninge Hospital , Kortrijk , Belgium
14. Department of General and Digestive Surgery, Clinica Universidad de Navarra , Pamplona , Spain
15. Department of Digestive Minimally Invasive Surgery, Antoine Béclère Hospital , Paris , France
16. Chirurgia Epatobiliare, Università Cattolica del Sacro Cuore-IRCCS , Rome , Italy
17. Department of Digestive, Oncologic and Metabolic Surgery, Institut Mutualiste Montsouris, Université Paris Descartes , Paris , France
18. Department of Geriatrics, Poliambulanza Foundation Hospital , Brescia , Italy