1. National Institute for Health Research Biomedical Research Unit in Gastrointestinal and Liver Diseases at Nottingham University Hospitals NHS Trust, University of Nottingham, Nottingham, UK
2. Department of Colorectal Surgery, Nottingham University Hospitals NHS Trust, Nottingham, UK
3. School of Cancer Sciences, University of Birmingham, Birmingham, UK
4. Department of Gastroenterology, Royal Wolverhampton NHS Trust, Wolverhampton, UK
5. Nottingham University Hospitals NHS Trust
6. Royal Wolverhampton NHS Trust
7. University Hospitals Birmingham NHS Foundation Trust
8. Royal Derby Hospital Foundation NHS Trust
9. University Hospitals Bristol NHS Foundation Trust
10. Yeovil District Hospital NHS Foundation Trust
11. Leeds Teaching Hospitals NHS Trust