1. Department of Medicine, Gastroenterology and Endoscopy, Fondazione Poliambulanza, Brescia, Italy
2. Department of Gastroenterology, Fondazione Policlinico Universitario A. Gemelli IRCCS – Università Cattolica del Sacro Cuore, Roma, Italy
3. Pathology Unit, Fondazione Poliambulanza, Brescia, Italy
4. Digestive Endoscopy Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS – Università Cattolica del Sacro Cuore, Roma, Italy