1. Department of General, Emergency Surgery and New Technologies, Baggiovara General Hospital, Modena, Italy.
2. Department of Surgery, University of Modena and Reggio Emilia, Modena, Italy.
3. General Surgery Department, Torvergata University, Rome, Italy.
4. Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.