Oxford University, Oxford, United Kingdom. The John Radcliffe Hospital, Oxford, GBR. NHSBT, Oxford, United Kingdom. The Royal Bournemouth and Christchurch Hospitals NHS Foundation Trust, Bournemouth, United Kingdom. Transfusion Research Unit, Monash University, Melbourne, Australia. Department of Haematology, Leeds Teaching Hospitals, Leeds, United Kingdom. Wellington Blood & Cancer Centre, Capital & Coast District Health Board, Wellington, New Zealand. Malaghan Institute of Medical Research, Wellington, New Zealand. NHS Blood and Transplant Clinical Trials Unit, Cambridge, United Kingdom. NHS Blood and Transplant Clinical Trials Unit, Bristol, United Kingdom. Department of Laboratory Medicine and Molecular Diagnostics, Sunnybrook Health Sciences Centre, Toronto, ON, Canada. Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada. Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.