1 General Surgery, Patti Hospital, Patti, ME, Italy.
2 Department of Surgical Sciences and Advanced Technologies "G.F. Ingrassia", Cannizzaro Hospital, University of Catania, Catania, Italy.
3 Department of Surgical Sciences and Advanced Technologies "G.F. Ingrassia", Cannizzaro Hospital, University of Catania, Catania, Italy. [email protected].