1Department of Visceral Surgery, Lausanne University Hospital CHUV, University of Lausanne (UNIL), Lausanne, Switzerland 2Department of Diagnosis and Interventional Imaging, University Hospital of Nice, Nice, France 3Clinical surgery, University of Edinburgh, Royal Infirmary of Edinburgh, Edinburgh, Scotland 4Department of Surgical Oncology, University of Texas MD Anderson Cancer Center, Houston, USA 5Department of Hepato-Pancreatic-Biliary Surgery, “F.