1. Centre for Surgical Research School of Social and Community Medicine University of Bristol Bristol UK
2. Severn School of Surgery University Hospitals Bristol NHS Foundation Trust Bristol UK
3. Division of Surgery Head and Neck University Hospitals Bristol NHS Foundation Trust Bristol UK
4. Colorectal Cancer Patient Representative North Bristol NHS Trust Bristol UK
5. Department of General Surgery North Bristol NHS Trust Bristol UK
6. Colorectal Surgery Unit University Hospitals Bristol NHS Foundation Trust Bristol UK
7. Colorectal Consumer Liaison Group National Cancer Research Institute London UK
8. Academic Department of Surgery University of Birmingham Birmingham UK
9. Department of Surgery St Mark's Hospital and Academic Institute Harrow UK
10. Academic Surgical Unit St James' University Hospital NHS Trust Leeds UK
11. Centre for Ethics in Medicine University of Bristol Bristol UK
12. Colorectal Network Site Specific Group Avon, Somerset and Wiltshire Cancer Services Bristol UK
13. Centre for Statistics in Medicine and Oxford Clinical Trials Research Unit Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences University of Oxford Oxford UK
14. Department of Colorectal Surgery Plymouth Hospitals NHS Trust Plymouth UK
15. Clinical Trials Research Unit University of Leeds Leeds UK