1. Colorectal Unit Department of General and Digestive Surgery Bellvitge University Hospital University of Barcelona IDIBELL (Bellvitge Biomedical Investigation Institute) Barcelona Spain
2. Colorectal Surgery Vall d’Hebron University Hospital Autonomous University of Barcelona Barcelona Spain
3. Department of Advanced Medical and Surgical Sciences Università degli Studi della Campania ‘Luigi Vanvitelli’ Naples Italy