1 National Health Service Blood and Transplant, Oxford, United Kingdom; Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, United Kingdom.
2 Nuffield Department of Obstetrics and Gynaecology, University of Oxford, United Kingdom. Electronic address: abigail.lamikanra@ndcls.ox.ac.uk.
3 Department of Biochemistry, University of Bath, United Kingdom.
4 Nuffield Department of Orthopaedic Surgery and Rheumatology, University of Oxford, United Kingdom.
5 Clinical Trials Division, National Health Service Blood and Transplant, Bristol, United Kingdom.
6 National Health Service Blood and Transplant, Oxford, United Kingdom.
7 Department of Haematology, Churchill Hospital, Oxford, United Kingdom.
8 Department of Haematology, Churchill Hospital, Oxford, United Kingdom; Anthony Nolan Research Institute, London, United Kingdom.
9 National Health Service Blood and Transplant, Oxford, United Kingdom; Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, United Kingdom; Department of Haematology, Churchill Hospital, Oxford, United Kingdom. Electronic address: david.roberts@ndcls.ox.ac.uk.