1. Canadian Blood Services, Ottawa, ON, Canada;
2. Department of Laboratory Medicine, The Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, ON, Canada;
3. Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada;
4. Hungarian Academy of Sciences–Eötvös Loránd University (MTA-ELTE) Immunology Research Group, Budapest, Hungary; and
5. Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada