1. Diagnostic and Interventional Endoscopy of Pancreas, Pancreas Institute, University of Verona, 37134 Verona, Italy
2. Department of Diagnostics and Public Health, Section of Pathology, University of Verona, 37134 Verona, Italy
3. Gastrointestinal Unit, Department of Medical and Surgical Sciences, Hospital of Imola, University of Bologna, 40026 Imola, Italy
4. Department of Pathology and Diagnostics, University Hospital of Verona, 37126 Verona, Italy
5. Gastroenterology Unit, Department of Medical Sciences, University of Foggia, 00161 Foggia, Italy