1. General Surgery Unit, G.B. Grassi Hospital, ASL Roma 3, Rome, Italy
2. General and Emergency Surgery Unit, Azienda Ospedaliera San Camillo-Forlanini, Rome, Italy
3. General Surgery Unit, Santo Spirito in Sassia Hospital, ASL Roma 1, Rome, Italy
4. Emergency Surgery and Trauma Unit—Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Catholic University of Sacred Heart, Rome, Italy
5. Surgery Center, Colorectal Surgery Unit—Fondazione Policlinico Universitario Campus Bio-Medico, University Campus Bio-Medico of Rome, Rome, Italy