1. Department of Gastroenterology, Klinikum Lüneburg, University of Hamburg, Lüneburg, Germany
2. Department of Medicine, Division of Gastroenterology, Mater Dei Hospital, Msida, Malta
3. University Hospital Zürich, Department of Gastroenterology and Hepatology, Zürich, Switzerland, and Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois CHUV, University Hospital Lausanne, Lausanne, Switzerland
4. Department of Gastroenterology and Hepatology, CHU UCL Namur, Yvoir, Belgium
5. Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium, and Department of Chronic Diseases, Metabolism and Ageing, TARGID-IBD, KU Leuven, Leuven, Belgium
6. Infectious Diseases Service, Centro Hospitalar Universitário São João, Porto, Portugal
7. Instituto de Inovação e Investigação em Saúde [I3s], Faculty of Medicine, Department of Medicine, University of Porto, Portugal
8. Gastroenterology Department, St James University Hospital, Leeds, UK
9. Humanitas Clinical and Research Center – IRCCS -, Rozzano [Mi], Italy
10. Humanitas University, Department of Biomedical Sciences, Milan, Italy
11. Hospital Universitari Mútua Terrassa, Digestive Diseases Department, Terrassa, Catalonia, and Centro de Investigación Biomédica en red de Enfermedades Hepáticas y Digestivas CIBERehd, Madrid, Spain
12. Inflammatory Bowel Disease Center, Department of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, FL, USA
13. Department of Gastroenterology, Barts Health NHS Trust, Royal London Hospital, London, UK
14. Department of Gastroenterology, Venizeleio General Hospital, Heraklion, Greece
15. Department of Gastroenterology, Sheba Medical Center, Ramat Gan, Israel, and Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
16. Sorbonne Université, INSERM, Institut Pierre Louis d’Epidémiologie et de Santé Publique, AP-HP, Hôpital Saint-Antoine, Department of Gastroenterology, Paris, France
17. Department of Infectious Diseases, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
18. Gastroenterology Department, Centro Hospitalar São João, Porto, Portugal
19. Institute of Pharmacology and Therapeutics, Faculty of Medicine, University of Porto, Portugal
20. Outpatient Department of Gastroenterology, Department of Geriatrics, Klinikum Lüneburg, University of Hamburg, Lüneburg, Germany
21. Department of Paediatric Gastroenterology, Erasmus MC-Sophia Children’s Hospital, Rotterdam, The Netherlands
22. IBD Unit, Department of Gastroenterology, Hospital Clínico San Carlos and Instituto de Investigación del Hospital Clínico San Carlos [IdISSC], Madrid, Spain
23. Ankara University School of Medicine, Department of Gastroenterology, Ankara, Turkey
24. Centre Hospitalier de l’Université de Montréal [CHUM] Pharmacy Department and Faculty of Pharmacy, Université de Montréal, Montréal, QC, Canada
25. University Hospital Zürich, Department of Gastroenterology and Hepatology, Zürich, Switzerland
26. Department of Infectious Diseases, Tourcoing Hospital, Tourcoing, France