1. Department of Colorectal Surgery Oxford University Hospitals NHS Trust Oxford UK
2. Institute for Cancer Genetics and Informatics Oslo University Hospital OsloNorway
3. Department of Informatics University of Oslo Oslo Norway
4. Nuffield Division of Clinical Laboratory Sciences University of Oxford OxfordUK
5. Department of Oncology MRC Oxford Institute for Radiation Oncology University of Oxford OxfordUK
6. Intestinal Stem Cell Biology Laboratory Nuffield Department of Medicine Wellcome Centre for Human Genetics University of Oxford Oxford UK
7. Department of Pathology and Molecular Pathology University and University Hospital Zürich Zürich Switzerland
8. Department of Oncology and Nuffield Department of Medicine University of Oxford Oxford UK