1 Department of Advanced Medical and Surgical Sciences, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy; Colorectal Unit, Vall d'Hebron University Hospital, Universitat Autonoma de Barcelona UAB, Barcelona, Spain.
2 Division of General and HPB Surgery, ASST Rhodense, Rho Memorial Hospital, Milano, Italy. Electronic address: gmsampietro@asst-rhodense.it.