[1] KU Leuven,Faculty of Psychology and Educational Sciences
[2] Research Foundation-Flanders,Faculty of Social Sciences
[3] Clearinghouse for Self-Help,Department of Public Health and Primary Care
[4] KU Leuven,Institute of Health and Care Science
[5] Crohn’s & Ulcerative Colitis Foundation,Department of Paediatrics and Child Health
[6] KU Leuven,Department of Development and Regeneration, Skeletal Biology and Engineering Research Center
[7] KU Leuven,Department of Gastroenterology and Hepatology
[8] University of Gothenburg,Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Clinical and Experimental Medicine
[9] University of Cape Town,Unit for Professional Training and Service in the Behavioural Sciences (UNIBS)
[10] KU Leuven,undefined
[11] University Hospitals Leuven,undefined
[12] KU Leuven,undefined
[13] KU Leuven,undefined
[14] University of the Free State,undefined