1. Academic Haematology, Northern Institute of Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom;
2. Newcastle Clinical Trials Unit, Institute of Health and Society, Newcastle University, Newcastle upon Tyne, United Kingdom;
3. Department of Haematology, Newcastle upon Tyne Hospitals National Health Service (NHS) Foundation Trust, Newcastle upon Tyne, United Kingdom;
4. Department of Haematology, Anchor Unit, Aberdeen Royal Infirmary, NHS Grampian, Aberdeen, United Kingdom;
5. Department of Haematology, Sunderland Royal Infirmary, City Hospitals Sunderland NHS Foundation Trust, Sunderland, United Kingdom;
6. Department of Cellular Pathology, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom;
7. Institute of Health and Society, Newcastle University, Newcastle upon Tyne, United Kingdom; and
8. Department of Pathology, Western General Hospital, NHS Lothian, University of Edinburgh, Edinburgh, United Kingdom