1 Colorectal Surgery, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Barcelona, Spain.
2 Colorectal Unit, Department of General and Digestive Surgery, Bellvitge University Hospital, University of Barcelona, C/Feixa Llarga S/N, L' Hospitalet de Llobregat, 08907, IDIBELL (Bellvitge Biomedical Investigation Institute), Barcelona, Spain.
3 Department of Advanced Medical and Surgical Sciences, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy.