1 Department of Surgery, Sacro Cuore-Don Calabria Hospital, Verona, Italy.
2 Division of Pancreatic Surgery, Pancreas Translational &Clinical Research Center, Università Vita-Salute, San Raffaele Scientisfic Institute, Milan, Italy.
3 Department of Digestive System, Pancreas Unit, Sant'Orsola-Malpighi Hospital, Bologna, Italy.
4 Digestive and Liver Disease Unit, S. Andrea Hospital, University Sapienza, Rome, Italy.