1. Gastroenterology and Digestive Endoscopy Unit, Forlì-Cesena Hospitals, AUSL Romagna, Forlì-Cesena, Italy
2. Gastroenterology Unit, Rho-Garbagnate Hospital, ASST Rhodense, Milan, Italy
3. Gastroenterology Unit, Santa Maria delle Croci Hospital, AUSL Romagna, Ravenna, Italy
4. Gastroenterology and Digestive Endoscopy Unit, Ospedale "Infermi" di Rimini, AUSL Romagna, Rimini, Italy
5. Gastroenterology and Digestive Endoscopy Unit, Azienda Ospedaliero-Universitaria di Modena, Modena, Italy
6. Gastroenterology Unit, Valduce Hospital, Como, Italy
7. Gastroenterology and Digestive Endoscopy Unit, Azienda USL di Modena, Modena, Italy
8. Gastroenterology Unit, Hospital of Imola, University of Bologna, Bologna, Italy
9. Università degli studi di Foggia, Foggia, Italy
10. Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
11. Gastroenterology Unit – University Hospital of Padua, Padua, Italy
12. Gastroenterology and Digestive Endoscopy Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
13. Gastroenterology and Hepatology Unit, Guglielmo da Saliceto Hospital, Piacenza, Italy
14. AUSL Reggio Emilia, Reggio Emilia, Italy
15. Unit of Surgical Oncology of Digestive Tract, Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
16. Gastroenterology and Endoscopy Unit, A.R.N.A.S. Ospedali Civico Di Cristina Benfratelli, Palermo, Italy
17. Humanitas University, Milan, Italy
18. Gastroenterology and Digestive Endoscopy Unit, Castelli Hospital, Roma, Italy
19. Porto Comprehensive Cancer Center, and RISE@CI-IPO (Health Research Network), Porto, Portugal