1. Department of Clinical Medicine Aalborg University Aalborg Denmark
2. Department of Gastroenterology and Hepatology Aalborg University Hospital Aalborg Denmark
3. Data Science Lab Methods and Analysis Statistics Denmark Copenhagen Denmark
4. Department of Public Health University of Copenhagen Copenhagen Denmark
5. National Institute of Public Health University of Southern Denmark Copenhagen Denmark
6. Gastro Unit Hvidovre University Hospital Hvidovre Denmark
7. Department of Medicine University of Pittsburgh Pittsburgh Pennsylvania USA