1. Department of Gastroenterology, South Tyneside District Hospital, South Shields, United Kingdom
2. Northern Region Endoscopy Group, Newcastle upon Tyne, United Kingdom
3. Translational Gastroenterology Unit and Oxford NIHR Biomedical Research Centre, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
4. Department of Gastroenterology, Northumbria Healthcare NHS Foundation Trust, North Shields, United Kingdom
5. Statsconsultancy Ltd., Amersham, United Kingdom
6. Department of Gastroenterology, Sunderland Royal Hospital, Sunderland, United Kingdom
7. Department of Gastroenterology, University Hospital of North Tees, Stockton-on-Tees, United Kingdom
8. Department of Gastroenterology, James Cook University Hospital, Middlesbrough, United Kingdom
9. Population Health Sciences Institute and Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, United Kingdom