1. Centre for Clinical Haematology, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom;
2. Department of Haematology, Cardiff University School of Medicine, Cardiff, United Kingdom;
3. Centre for Trials Research, Cardiff University, Cardiff, United Kingdom;
4. Haematology and Transplant Unit, The Christie, Manchester, United Kingdom; and
5. Department of Medical and Molecular Genetics, King’s College Medical School, London, United Kingdom