1. Department of Medicine, Cumming School of Medicine, University of Calgary, Alberta, Canada
2. Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Alberta, Canada
3. Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Alberta, Canada
4. O’Brien Institute for Public Health, Cumming School of Medicine, University of Calgary, Alberta, Canada
5. Tufts Medical Center, Boston, Massachusetts
6. Department of Medicine, University of Alberta, Alberta, Canada