1. Department of General and Oncological Surgery Mauriziano Hospital Turin Italy
2. Hepatobiliary Surgery IRCCS San Raffaele Hospital Milan Italy
3. Unit of Hepato‐Biliary Surgery Foundation ‘Policlinico Universitario A. Gemelli’ Università Cattolica del Sacro Cuore Rome Italy
4. Department of Medical and Surgical Sciences University of Bologna Bologna Italy
5. IRCCS Azienda Ospedaliero‐Universitaria di Bologna Bologna Italy