1. Department of Gastroenterology‘Maggiore della Carità’ HospitalNovaraItaly
2. Department of Pathology and DiagnosticsG.B. Rossi University HospitalVeronaItaly
3. Department of Health SciencesSchool of MedicineUniversity of Eastern Piedmont ‘Amedeo Avogadro’NovaraItaly
4. Gastroenterology and Digestive Endoscopy UnitThe Pancreas InstituteG.B. Rossi University HospitalVeronaItaly
5. Department of Pathology‘Maggiore della Carità’ HospitalNovaraItaly
6. Digestive Endoscopy UnitIRCCS Fondazione Policlinico Universitario A. GemelliRomeItaly
7. ARC-Net Research CentreG.B. Rossi University HospitalVeronaItaly