1. Gastroenterology Department, Portuguese Oncology Institute of Porto, Porto, Portugal
2. Center for research in health technologies and information systems (CINTESIS), Faculty of Medicine, University of Porto, Porto, Portugal
3. Surgery and Physiology Department, Faculty of Medicine of the University of Porto, Porto, Portugal
4. Gastroenterology division, Edouard Herriot Hospital, Lyon, France
5. Gastroenterology Department, Endoscopy Unit, Complejo Hospitalario de Navarra, Pamplona, Spain
6. Navarrabiomed, Universidad Pública de Navarra, IdiSNa, Pamplona, Spain
7. Department of Medicine I, Paracelsus Medical University, Salzburg, Austria
8. Department of Hepato-Gastroenterology, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
9. Department of Gastroenterology, Universitätsklinikum Augsburg, Germany
10. Department of Gastroenterology and Hepatology, AZ Maria-Middelares, Ghent, Belgium
11. Department of Gastroenterology and Hepatology, UZA, Antwerp, Belgium
12. King’s Institute of Therapeutic Endoscopy, King’s College Hospital, Denmark Hill, London, UK
13. National Research Institute Specialized in Gastroenterology “S. de Bellis” – IRCCS, Castellana Grotte (BA), Italy
14. Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht University, The Netherlands
15. Department of Gastroenterology and Hepatology, St Antonius Hospital Nieuwegein, The Netherlands
16. Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
17. Translational Gastroenterology Unit, Nuffield Department of Medicine, Experimental Medicine Division, John Radcliffe Hospital, University of Oxford, Oxford, UK
18. Oxford NIHR Biomedical Research Centre, Oxford, UK
19. Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield, UK
20. University College London Hospitals, London, UK
21. Department of Gastroenterology, Erasme University Hospital, Brussels, Belgium
22. Department of Gastroenterology and Hepatology, University Hospitals Leuven, and TARGID, KU Leuven, Belgium