1 Department of General Surgery II, Unit of Advanced Laparoscopic Surgery, San Gerardo Hospital, via Pergolesi 33, 20900, Monza, MB, Italy. mattia_garancini@yahoo.it.
2 Department of General Surgery II, Unit of Advanced Laparoscopic Surgery, San Gerardo Hospital, via Pergolesi 33, 20900, Monza, MB, Italy.