1. Department of Public Health and Nursing, HUNT Research Centre, NTNU, Norwegian University of Science and Technology, Levanger, Norway
2. Lillebælt Hospital, Vejle, Denmark
3. Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
4. Department of Medical Gastroenterology S, Odense University Hospital, Odense, Denmark
5. Department of Molecular Medicine and Surgery, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
6. School of Cancer and Pharmaceutical Sciences, King’s College London, UK
7. Medical Department, Levanger Hospital, Nord-Trøndelag Hospital Trust, Levanger, Norway