1. Department of Haematology; Cardiff University School of Medicine; Cardiff; UK
2. Department of Haematology; Nottingham City Hospital; Nottingham; UK
3. Department of Haematology; Aberdeen Royal Infirmary; Aberdeen; UK
4. Department of Haematology; Bart's and the London NHS Trust; London; UK
5. Department of Haematology; University Hospital of Wales; Cardiff; UK
6. Cancer Research UK Clinical Trials Unit; School of Cancer Sciences; University of Birmingham; Birmingham; UK
7. Department of Haematology; Barnet Hospital; Hertfordshire; UK
8. Department of Haematology; Birmingham Heartlands Hospital; Birmingham; UK