3 Department of Surgery and Cancer, Imperial College, London, UK. [email protected].
4 Department of Advanced Medical and Surgical Sciences, Universita' degli Studi della Campania Luigi Vanvitelli, Naples, Italy.
5 Colorectal Surgery, Vall d'Hebron University Hospital, Barcelona, Spain.
6 Surgery of the Alimentary Tract, Department of Medical and Surgical Sciences, Sant'Orsola Hospital, Alma Mater Studiorum University of Bologna, Bologna, Italy.
7 General Surgery Unit, Department of Biomedical and Clinical Sciences "L. Sacco", University of Milan, AAST Fatebenefratelli Sacco, Milan, Italy.
8 Division of General and HPB Surgery, Department of Surgery, ASST Rhodense - Rho Memorial Hospital, 20017 Rho, Milan, Italy.
9 Division of Colon and Rectal Surgery, Humanitas Clinical and Research Center IRCCS, Via Manzoni 56, 20089 Rozzano, Milan, Italy.
10 Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20090 Pieve Emanuele, Milan, Italy.