1. Department of Oncology and Metabolism, School of Clinical Medicine University of Sheffield Sheffield UK
2. Academic Directorate of General Surgery Sheffield Teaching Hospitals NHS Foundation Trust Sheffield UK
3. Sheffield Clinical Trials Research Unit, School of Health and Related Research (ScHARR) University of Sheffield Sheffield UK
4. Academic Coloproctology, Institute of Genetics and Cancer University of Edinburgh, Western General Hospital Edinburgh UK
5. Logan Hospital Brisbane Queensland Australia
6. Royal Derby Hospital University Hospitals of Derby and Burton Derby UK
7. Nottingham University Hospitals NHS Trust Nottingham UK
8. Addenbrookes Hospital Cambridge University Hospitals Cambridge UK
9. St Mark’s Hospital London UK
10. Queen Alexandra Hospital Portsmouth UK
11. Oxford University Hospitals NHS Foundation Trust Oxford UK