1. Department of Clinical Pathology; Sunnybrook Health Sciences Centre; the; Toronto Ontario Canada
2. Department of Laboratory Medicine and Pathobiology; University of Toronto; and the; Toronto Ontario Canada
3. Quality, Utilization, Efficacy; and Safety of Transfusion (QUEST) Research Collaborative; Toronto Ontario Canada
4. Department of Clinical Pathology; Northumberland Hills Hospital; Cobourg Ontario Canada
5. Department of Clinical Pathology; University Health Network, and the; Toronto Ontario Canada
6. Department of Laboratory Medicine; St. Michael's Hospital; Toronto Ontario Canada
7. Medical Services and Innovation; Canadian Blood Services; Ancaster Ontario Canada
8. Department of Pathology and Molecular Medicine; McMaster University; Hamilton Ontario Canada.