1. Southampton Health Technology Assessments Centre, University of Southampton, Southampton, UK
2. Department of Radiology, University Hospital Southampton, Southampton, UK
3. University of Southampton Clinical Trials Unit, University Hospital Southampton, Southampton, UK
4. Public Health Sciences and Medical Statistics, University of Southampton Faculty of Medicine, University Hospital Southampton, Southampton, UK
5. University of Liverpool, University Hospital Aintree, Liverpool, UK
6. Gastrointestinal Unit, Royal Marsden Hospital, London, UK
7. Division of Surgical Oncology, the Netherlands Cancer Institute – Antoni van Leeuwenhoek Hospital, Amsterdam, the Netherlands
8. University Surgery, University of Southampton Faculty of Medicine, University Hospital Southampton, Southampton, UK