1. Department of Haematology Frimley Health NHS Foundation Trust Slough Berkshire UK
2. Department of Haematology Oxford University Hospitals NHS Foundation Trust, Churchill Hospital Headington Oxford UK
3. Department of Haematology Cambridge University Hospitals NHS Foundation Trust Cambridge UK
4. Department of Cellular Pathology and Nuffield Division of Clinical Laboratory Sciences Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital Oxford UK