1 Department of Gastroenterology, Zealand University Hospital, Køge, Denmark.
2 The Gastro Unit, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark.
3 Department of Clinical Medicine, The Faculty of Medicine, Center for Molecular Prediction of Inflammatory Bowel Disease - PREDICT, Aalborg University, Aalborg, Denmark.
4 Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.