1. Unit of Hepato-Biliary and Pancreatic Surgery, “F. Miulli” General Hospital, Acquaviva delle Fonti, 70021 Bari, Italy
2. Unit of Interventional Radiology, “F. Miulli” General Hospital, Acquaviva delle Fonti, 70021 Bari, Italy
3. Hepatobiliary Surgery Division, IRCCS San Raffaele Scientific Institute, 20132 Milano, Italy
4. Hepatobiliary Surgery Division, Vita-Salute San Raffaele University, 20132 Milano, Italy
5. Unit of Hepato-Pancreato-Biliary Surgery and Liver Transplantation, University of Modena and Reggio Emilia, 41121 Modena, Italy
6. Unit of Hepato-Biliary and Pancreatic Surgery, Istituto Nazionale Tumori IRCCS Fondazione G. Pascale, 80131 Napoli, Italy
7. Unit of General Surgery, San Giovanni Battista Hospital, USL Umbria 2, 06034 Foligno, Italy
8. Unit of General Surgery, “Vito Fazzi” Hospital, 73100 Lecce, Italy
9. Unit of Digestive and Hepatobiliary Surgery, Centre Hospitalier Universitaire Henri Mondor, 94000 Créteil, France
10. Department of Visceral and Digestive Surgery, Unit of Hepato-Bilio-Pancreatic Surgery, Nouvel Hospital Civil, University Hospital of Strasbourg, 67000 Strasbourg, France
11. Unit of Surgery, Hôpital Robert Debré, 51100 Reims, France