1. Department of General Surgery and Surgical Specialties, University of Modena and Reggio Emilia Medical School, Surgical Clinic, Via del Pozzo, 71, Modena (MO) 41124, Italy
2. Second Opinion Medical Network, Via Ciro Bissi, 125, Modena (MO), Italy
3. Department of Nephrology, Dialysis and Transplantation, Hospital of Modena, Via del Pozzo, 71, Modena41124, Italy