1. Gastroenterology and Digestive Endoscopy Unit, The Pancreas-Institute, Integrated University-Hospital of Verona, Italy
2. Unit of General and Pancreatic Surgery, The Pancreas-Institute, Integrated University-Hospital of Verona, Italy
3. Department of Diagnostics and Public Health, Integrated University-Hospital of Verona, Italy
4. Department of Radiology, Integrated University-Hospital of Verona, Italy
5. Digestive Endoscopy Unit, University-Hospital Agostino Gemelli, Roma, Italy