1. Department of Pathology and Laboratory Medicine; University of British Columbia; Vancouver British Columbia Canada
2. Department of Pathology, Vancouver Coastal Health Authority; Vancouver British Columbia Canada
3. Department of Medicine; Queens University; Kingston Ontario Canada
4. Department of Medicine, School of Medicine; Wayne State University; Detroit Michigan
5. Department of Medicine; McMaster University; Hamilton Ontario Canada
6. Department of Health Research, Methods and Impact; McMaster University; Hamilton Ontario Canada
7. McMaster Centre for Transfusion Research; McMaster University; Hamilton Ontario Canada