1. Gastroenterology Unit, Department of Oncological and Specialty Medicine, Ospedale “Maggiore della Carità”, Novara, Italy
2. Digestive Endoscopy Unit, Division of Gastroenterology, Humanitas Clinical and Research Hospital-IRCCS, Rozzano (MI), Italy
3. Digestive Endoscopy Unit, Division of Gastroenterology, Humanitas Clinical and Research Hospital-IRCCS, Rozzano (MI), Italy; Department of Biomedical Sciences, Pieve Emanuele, Milano, Italy
4. Division of Gastroenterology, Department of Gastroenterology & Transplantation, AOU Ospedali Riuniti, Ancona, Italy
5. Digestive Endoscopy Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
6. Centre for Endoscopic Research Therapeutics and Training (CERTT), Università Cattolica del Sacro Cuore, Roma, Italy
7. Gastroenterology and GI Endoscopy Unit, University Hospital of Udine, Udine, Italy
8. Mater Olbia Hospital-Qatar Foundation Endowment & Gemelli Foundation, Gastroenterology and GI Endoscopy Unit, Olbia (OT), Italy
9. Gastroenterology and Digestive Endoscopy Unit, Ospedale S. Chiara, Trento, Italy
10. Digestive Endoscopy Unit, AOUI Verona, Italy
11. Operative Digestive Endoscopy Unit, Policlinico Universitario Campus Bio-Medico di Roma, Roma
12. Gastroenterology and Endoscopy Unit, Department of Oncological and Specialty Medicine, S. Camillo Forlanini Hospital, Rome, Italy
13. Gastroenterology and Endoscopy Unit, Gradenigo-Humanitas, Torino, Italy
14. Gastroenterology and Digestive Endoscopy Unit, A.O. Ospedale Riuniti Marche Nord, Pesaro, Italy
15. Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
16. Interventional Endoscopy Unit, Azienda USL Toscana Nord-Ovest, Livorno, Italy
17. Endoscopy Unit, Apuane Hospital, Massa-Carrara, Italy
18. Operative Endoscopy Unit, Azienda Ospedaliera Universitaria di Salerno, Italy
19. Gastroenterology and Gastrointestinal Endoscopy, General Hospital, Sanremo (IM), Italy
20. Department of Gastroenterology and Digestive Endoscopy, ASST Rhodense Garbagnate Milanese, Milano, Italy
21. Gastroenterology and Digestive Endoscopy Unit, Ospedale S. Andrea, ASL VC, Vercelli, Italy
22. Gastroenterology Unit, Policlinico di Monza, Monza (MB), Italy
23. Department of Gastroenterology, Nuovo Regina Margherita Hospital, Roma, Italy