1. Department of Surgery Sapienza University of Rome Rome Italy
2. General Surgery Unit, Department of Medical and Surgical Sciences and Translational Medicine St Andrea University Hospital, Sapienza University of Rome Rome Italy
3. St Mark's Hospital London UK
4. Department of Pharmacy, Health and Nutritional Sciences University of Calabria Rende Italy
5. General Surgery Unit Department of Surgery Cosenza Italy
6. Department of Surgery, Oncology and Gastroenterology—DISCOG University of Padua Padua Italy
7. Surgery Unit 2 Regional Hospital Treviso, AULSS2 Marca Trevigiana Treviso Italy