1. Department of Surgery, University of Manitoba, Max Rady College of Medicine, Winnipeg, Manitoba, Canada
2. Division of Cardiac Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
3. Division of Cardiology, Duke Clinical Research Institute, Duke University, Durham, North Carolina, United States
4. Department of Medicine, University of Ottawa and Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
5. Department of Kinesiology, McMaster University, Hamilton, Ontario, Canada
6. Division of Hematology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
7. Division of Cardiology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada