1. The Royal Marsden NHS Foundation Trust; London UK
2. Department of Surgical Oncology; The University of Texas MD Anderson Cancer Center; Houston Texas USA
3. Surgical Oncology; Catharina Ziekenhuis; Eindhoven The Netherlands
4. Colorectal Surgery; Imperial College London; London UK
5. CRUK/MRC Oxford Institute for Radiation Oncology; Oxford UK
6. University of Dundee; Dundee UK
7. Lankenau Hospital; Wynnewood Pennsylvania USA
8. Gastrointestinal Cancer Imaging; Imperial College London; London UK