1. Department of Surgery, Nicola Giannettasio Hospital, Corigliano-Rossano, Italy
2. Department of Clinical Surgery, University of Edinburgh, Edinburgh, United Kingdom
3. Department of Surgery, ASST Santi Paolo e Carlo, San Carlo Borromeo Hospital, Milan, Italy
4. Division of Coloproctology, Department of General and Digestive Surgery, University Hospital Complex of Vigo - Alvaro Cunqueiro Hospital, Pontevedra, Spain
5. Department of Medical and Surgical Sciences, University of Catanzaro, Catanzaro, Italy
6. Department of Advanced Medical and Surgical Sciences, Università degli Studi della Campania “Luigi Vanvitelli”, Naples, Italy