1. Department of Hepatology and Gastroenterology Aarhus University Hospital Aarhus N Denmark
2. Department of Clinical Epidemiology Aarhus University Hospital Aarhus N Denmark
3. Division of Epidemiology and Public Health School of Medicine University of Nottingham Nottingham United Kingdom
4. Department of Medicine Regional Hospital Horsens Horsens Denmark
5. School of Medicine and Dentistry University of Central Lancashire Preston United Kingdom
6. National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre Nottingham University Hospitals NHS Trust and University of Nottingham Nottingham United Kingdom
7. Nottingham Digestive Diseases Centre School of Medicine University of Nottingham Nottingham United Kingdom