1. Department of Laboratory Medicine and Pathology; University of Alberta; Edmonton AB Canada
2. Centre for Innovation; Canadian Blood Services; Edmonton AB Canada
3. Canadian Blood Services; Centre for Blood Research; University of British Columbia; Vancouver BC Canada
4. Department of Pathology; University of British Columbia; Vancouver BC Canada
5. Canadian Blood Services; Ottawa ON Canada
6. Vascular Medicine Institute; University of Pittsburgh; Pittsburgh PA USA
7. Division of Pulmonary; Allergy and Critical Care Medicine; University of Pittsburgh; Pittsburgh PA USA
8. Department of Medicine; University of Pittsburgh; Pittsburgh PA USA