1. Program in Regenerative Medicine, Vascular Biology Group, Department of Physiology and Pharmacology, Krembil Centre for Stem Cell Biology, Robarts Research Institute, University of Western Ontario, London, Ontario, Canada.
2. Department of Medicine and Biochemistry, Division of Hematology, University of Ottawa, Ottawa, Ontario, Canada.
3. Department of Medicine, London Health Sciences Centre, Division of Hematology, and the University of Western Ontario, London, Ontario, Canada.