1. Gastroenterology and Digestive Endoscopy Unit Azienda Provinciale per i Servizi Sanitari (APSS), Santa Chiara Hospital Trento Italy
2. Gastroenterology Unit G.B. Grassi Hospital (ASL Roma 3) Rome Italy
3. Surgical Pathology Unit, Department of Laboratory Medicine Azienda Provinciale per i Servizi Sanitari (APSS), Santa Chiara Hospital Trento Italy
4. Center for Medical Sciences (CISMed) University of Trento Trento Italy