1. Department of Hepatology and Gastroenterology; Aarhus University Hospital; Aarhus Denmark
2. Department of Clinical Medicine; Aarhus University; Aarhus Denmark
3. Department of Gastroenterological Oncology, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology; Warsaw Poland
4. Clinical Effectiveness Research Group. Department of Transplantation Medicine; Oslo University Hospital; Oslo Norway
5. Center for Molecular Prediction of Inflammatory Bowel Disease, PREDICT, Department of Clinical Medicine; Aalborg University; Copenhagen Denmark
6. Department of Gastroenterology and Hepatology; Aalborg University Hospital; Aalborg Denmark
7. Institute of Health and Society, Department of Health Management and Health Economics; University of Oslo; Oslo Norway
8. Norwegian Knowledge Centre for the Health Services; Oslo Norway
9. Clinical Science and Education; Karolinska Institutet; Stockholm Sweden
10. Department of Clinical Epidemiology; Aarhus University Hospital; Aarhus Denmark