1. Gastroenterology and Digestive Endoscopy Unit, Forlì-Cesena Hospitals, AUSL Romagna, Forlì-Cesena, Italy
2. IRCCS AOUBO Policlinico S.Orsola, Bologna, Italy
3. Gastroenterology and Digestive Endoscopy Unit, Ospedale "Infermi" di Rimini, AUSL Romagna, Rimini, Italy
4. Azienda Ospedaliero – Universitaria di Modena, Modena, Italy
5. Gastroenterology Unit, Santa Maria delle Croci Hospital, AUSL Romagna, Ravenna, Italy
6. AUSL Reggio Emilia, Reggio Emilia, Italy
7. Gastroenterology Unit, Hospital of Imola, University of Bologna, Bologna, Italy
8. Gastroenterology and Hepatology Unit, Guglielmo da Saliceto Hospital, Piacenza, Italy
9. Humanitas University, Milan, Italy
10. Gastroenterology and Digestive Endoscopy Unit, Castelli Hospital, Roma, Italy
11. Porto Comprehensive Cancer Center, and RISE@CI-IPO (Health Research Network), Porto, Portugal