1. Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark;
2. Department of Clinical Sciences Malmö, Lund University, Lund, Sweden;
3. Department of Gastroenterology and Nutrition, Skåne University Hospital, Malmö, Sweden;
4. Department of Pathology, Zealand University Hospital, Roskilde, Denmark;
5. Department of Pathology, Skåne University Hospital, Lund, Sweden;
6. Department of Pathology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark;
7. Department of Medicine, Zealand University Hospital, Køge, Denmark