1. Department of Advanced Medical and Surgical Sciences, Università degli Studi della Campania ‘Luigi Vanvitelli’ , Naples , Italy
2. Colorectal Unit, Vall d’Hebron University Hospital, Universitat Autonoma de Barcelona UAB , Barcelona , Spain
3. Surgery of the Alimentary Tract, IRCCS Azienda Ospedaliero Universitaria di Bologna , Bologna , Italy
4. Department of Medical and Surgical Sciences, Alma Mater Studiorum University of Bologna , Bologna , Italy
5. Division of General and Oncologic Surgery , Ospedale Mauriziano ‘Umberto I’. Torino , Italy
6. Division of General Surgery, ‘Luigi Sacco’ University Hospital , Milano , Italy
7. Service de Chirurgie Colorectale, Hôpital Beaujon, Clichy and Université de Paris , France
8. Portsmouth Hospital NHS Trust , Portsmouth , UK
9. Department of Surgery and Cancer, Imperial College London , UK
10. Division of General and HPB Surgery, ASST Rhodense, Rho Memorial Hospital , Milano , Italy
11. Division of Gastroenterology, ASST Fatebenefratelli Sacco – Department of Biomedical and Clinical Sciences ‘Luigi Sacco’ University of Milan , Italy