| Affiliation: | 1. Department of Surgery and Cancer, Imperial College, London, UK;2. St Mark's Hospital, London, UK;3. Sheffield Teaching Hospitals, Sheffield, UK;4. University College Hospital, London, UK;5. Clinical Trials Research Unit, University of Sheffield, Sheffield, UK;6. NIHR Nottingham Digestive Disease Biomedical Research Unit, Queen's Medical Centre Campus, Nottingham University Hospitals NHS Trust, Nottingham, UK;7. Departments of Gastroenterology and Colorectal Surgery, Western General Hospital, Edinburgh, UK |
