1. Stem Cell Research Laboratory, Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, and National Health Service Blood and Transplant, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.
2. Blood Research Laboratory, National Health Service Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom.
3. Computational Biology Research Group, The Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.