1. Gastroenterology Department, The Royal Wolverhampton NHS Trust, Wolverhampton WV10 0QP, UK
2. Imperial College Healthcare NHS Trust, London, UK
3. Department of Gastroenterology and Hepatology, St Mary’s Hospital, London, UK
4. Department of Gastroenterology, The Royal Liverpool and Broadgreen University Hospitals, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
5. Faculty of Medicine, University of Liverpool, Liverpool, UK
6. Department of Gastroenterology, Northern Care Alliance NHS Foundation NHS Trust, Manchester, UK
7. Manchester Academic Health Sciences, University of Manchester, Manchester, UK