1. Department of Gastroenterology and Hepatology Centre Hospitalier Universitaire UCL Namur Yvoir Belgium
2. Icahn School of Medicine at Mount Sinai New York New York USA
3. Department of Gastroenterology and Hepatology KU Leuven University Hospital Leuven Leuven Belgium
4. Department of Gastroenterology INITIative IBD Research Network Mercy University Hospital Cork Ireland
5. Centre for Colorectal Disease INITIative IBD Research Network St Vincent’s University Hospital & School of Medicine University College Dublin Dublin Ireland
6. Department of Clinical Pharmacology and Therapeutics INITIative IBD research network Galway University Hospital Galway Ireland
7. IBD Center Fondazione Policlinico Universitario Agostino Gemelli, IRCCS Università Cattolica del Sacro Cuore Rome Italy
8. Gastroenterology Department Centro de Investigaciones Biomédicas en Red de Enfermedades Hepáticas y Digestivas Hospital Universitari Germans Trias i Pujol Badalona Spain
9. Gastroenterology Department General Hospital of Piraeus ‘Tzaneio’ Piraeus Greece
10. Department of Gastroenterology Erasme University Hospital Brussels Belgium
11. Gastroenterology Department Hospital Universitario Rio Hortega Valladolid Spain
12. Gastroenterology Unit First Department of Medicine University of Szeged Szeged Hungary
13. Department of Gastroenterology Venizeleio General Hospital Heraklion Greece
14. Department of Gastroenterology and Hepatology Amsterdam University Medical Center Amsterdam The Netherlands
15. Department of Medicine 1 University Hospital Erlangen Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Erlangen Germany
16. Department of Medical Sciences University of Turin Turin Italy
17. Gastroenterology Leeds Teaching Hospitals NHS Trust Leeds UK
18. Department of Gastroenterology Radboud University Medical Center Nijmegen The Netherlands
19. Department of Statistics Centre Hospitalier Universitaire UCL Namur Yvoir Belgium
20. Hull University Teaching Hospitals NHS Trust Hull UK