1. McMaster Centre for Transfusion Medicine; Department of Medicine; McMaster University; Hamilton ON Canada
2. Department of Clinical Epidemiology & Biostatics; McMaster University; Hamilton ON Canada
3. Department of Medicine; McMaster University; Hamilton ON Canada
4. Canadian Blood Services, Research and Development; Hamilton ON Canada
5. Departments of Medicine and Laboratory Medicine; St. Michael's Hospital; Li Ka Shing Knowledge Institute; University of Toronto; Toronto ON Canada
6. Department of Pathology and Molecular Medicine McMaster University; Hamilton ON Canada