1. Department of Medicine, Divisions of General Internal Medicine and Endocrinology and Metabolism, St. Michael's Hospital, University of Toronto, 30 Bond St, Toronto, Ontario, M5B 1W8, Canada,
2. Nursing and Divisions of Cardiology and Cardiovascular Surgery, University of Alberta, Edmonton, Alberta, Albeta, Canada
3. Department of Medicine, Vancouver Hospital and Health Sciences Centre, University of British Columbia, Vancouver, British Columbia, Canada
4. Division of Cardiology, EPI-CORE Centre, University of Alberta, Edmonton, Alberta, Alberta, Canada
5. Division of General Internal Medicine, University of Alberta, Edmonton, Alberta, Alberta, Canada
6. Department of Cardiac Sciences, University of Alberta, Edmonton, Alberta, Alberta, Canada
7. Department of Medicine, Community Health Sciences and Centre for Health and Policy Studies, University of Alberta, Edmonton, Alberta, Alberta, Canada