1. Clinica Chirurgica, Universita Politecnica delle Marche, Ancona, Italy;
2. Department of General Surgery and Surgical Specialties “Paride Stefanini”, Sapienza University of Rome, Rome, Italy;
3. Department of Medical-Surgical Sciences and Biotechnologies, Division of General Surgery and Bariatric Centre of Excellence, Sapienza University of Rome, Rome, Italy