1. Department of Surgical Sciences, Policlinico Umberto I University Hospital, Sapienza University of Rome, Rome, Italy.
2. Department of General Surgery, San Salvatore Hospital, AST Pesaro-Urbino Pesaro, Italy.
3. Hepatopancreatobiliary Surgery, IRCCS Regina Elena National Cancer Institute, Rome, Italy.
4. Department of Experimental and Clinical Medicine, HepatoBiliaryPancreatic Surgery, University of Florence, Florence, Italy.