1. Department of Gastroenterology, Portuguese Oncology Institute – Porto, Portugal
2. MEDCIDS, Faculty of Medicine, University of Porto, Porto, Portugal
3. Porto Comprehensive Cancer Center (Porto.CCC) & RISE@CI-IPOP (Health Research Network), Porto, Portugal
4. Department of Surgery and Physiology, Faculty of Medicine, University of Porto, FMUP, Porto, Portugal
5. Gastroenterology, Unilabs, Portugal,
6. Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology & Metabolism, Amsterdam University Medical Center, Amsterdam, The Netherlands
7. Department of Gastroenterology and Hepatology, University Hospitals Leuven, TARGID, Leuven, Belgium
8. Department of Gastroenterology, Westmead Hospital, Sydney, Australia
9. Western Clinical School, University of Sydney, Sydney, Australia
10. Department of Hepatogastroenterology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
11. Department of Surgical and Medical Sciences and Translational Medicine, Sant’Andrea Hospital, Sapienza University of Rome, Italy
12. Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Erasme Hospital, Université Libre de Bruxelles (ULB), Brussels, Belgium
13. Department of Biomedical Sciences, Humanitas University, Milan, Italy. Endoscopy Unit, Humanitas Clinical and Research Center IRCCS, Rozzano, Italy
14. Department of Gastroenterology, University Hospital Augsburg, Augsburg, Germany
15. Department of Gastroenterology and Interventional Endoscopy, Krankenhaus Barmherzige Brueder Regensburg, Germany
16. Endoscopy and Gastroenterology Unit, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
17. Institute of Pathology, Friedrich-Alexander University Erlangen-Nuremberg, Klinikum Bayreuth, Bayreuth, Germany
18. Department of Gastroenterology and Hepatology, St. Antonius Hospital, Nieuwegein, The Netherlands
19. University Medical Center Utrecht, Utrecht University, The Netherlands
20. Department of Medical and Surgical Sciences, Gastroenterology Unit, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
21. Department of Gastroenterology, Queen Alexandra Hospital, Portsmouth, UK