1 General Surgery, Augusta Hospital, Syracuse, Italy.
2 Department of Surgical Sciences and Advanced Technologies "G.F. Ingrassia", University of Catania, General Surgery, Cannizzaro Hospital, Via Messina 829, 95126, Catania, Italy.
3 Department of Surgical Sciences and Advanced Technologies "G.F. Ingrassia", University of Catania, General Surgery, Cannizzaro Hospital, Via Messina 829, 95126, Catania, Italy. idicarlo@unict.it.