1. Department of Haematology, Hammersmith Hospital, Imperial College London, London, United Kingdom;
2. Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX;
3. Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD;
4. Centre for Trials Research, School of Medicine, Cardiff University, Cardiff, United Kingdom;
5. Department of Haematology, UCL Cancer Institute, University College London, London, United Kingdom; and
6. Leukemia Department, MD Anderson Cancer Center, Houston, TX