1. Department of Gastroenterology, Hôpital Erasme, ULB, Brussels, Belgium
2. Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium
3. Department of Chronic Diseases, Metabolism and Ageing, Leuven, Belgium, KU Leuven, Belgium
4. Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
5. Department of Gastroenterology, Centre Hospitalier Universitaire Sart-Tilman, ULG, Liège, Belgium
6. Department of Gastroenterology, Universitair Ziekenhuis Antwerpen, UZA, Antwerpen, Belgium
7. Department of Gastroenterology, Universitair Ziekenhuis Gent, Gent, Belgium
8. Department of Gastroenterology, AZ Groeninge, Kortrijk, Belgium
9. Department of Gastroenterology, Centre Hospitalier Universitaire Mont-Godinne, UCL, Yvoir, Belgium
10. Department of Gastroenterology, Imeldaziekenhuis, Bonheiden, Belgium
11. Department of Gastroenterology, Ziekenhuis Netwerk Antwerpen, Antwerpen, Belgium
12. Department of Gastroenterology, Ziekenhuis Oost-Limburg – Campus Sint-Jan, Genk, Belgium
13. Department of Gastroenterology, GZA Sint-Vincentius ziekenhuis, Antwerpen, Belgium
14. Department of Gastroenterology, Algemeen Ziekenhuis Sint-Lucas, Gent, Belgium
15. Department of Gastroenterology, Algemeen Ziekenhuis Sint-Lucas, Brugge, Belgium
16. Department of Gastroenterology, AZ Delta, Roeselare-Menen, Belgium