1. Cancer Research UK Scotland Centre, Institute of Genetics and Cancer, University of Edinburgh , Edinburgh , UK
2. Department of Colorectal surgery, Western General Hospital , Edinburgh , UK
3. Department of Surgery, Queen Elizabeth University Hospital , Glasgow , UK
4. Centre for Global Health, Usher Institute, University of Edinburgh , Edinburgh , UK
5. Department of Gastroenterology, Western General Hospital , Edinburgh , UK
6. Lead GP for Cancer and Palliative Care, NHS Lothian , Edinburgh , UK
7. Department of Radiology, Western General Hospital , Edinburgh , UK
8. Department of Biochemistry, Western General Hospital , Edinburgh , UK
9. UK Colon Cancer Genetics Group, Medical Research Council Human Genetics Unit, Medical Research Council Institute of Genetics & Cancer, Western General Hospital, The University of Edinburgh , Edinburgh , UK