1. Department of Internal Medicine, Division of Gastroenterology and Hepatology, Maastricht University Medical Centre, Maastricht, The Netherlands
2. NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, Maastricht, The Netherlands
3. Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, The Netherlands
4. Department of Gastroenterology and Hepatology, Zuyderland Medical Centre, Sittard-Geleen, The Netherlands
5. Department of Gastroenterology and Hepatology, St. Antonius Hospital, Nieuwegein, The Netherlands
6. CCUVN, Dutch IBD Patients Organization, Woerden, The Netherlands
7. Department of Methodology and Statistics, Care and Public Health Research Institute (CAPHRI), Maastricht, The Netherlands