1. Department of Medicine, McMaster University , 237 Barton Street East, Hamilton, ON L8L 2X2, Canada
2. University of Groningen, Department of Cardiology, University Medical Center Groningen , Groningen, The Netherlands
3. Department of Health Research Methods, Evidence and Impact, McMaster University , Hamilton, Canada
4. Research Institute of St Joseph's , Hamilton, Canada
5. Population Health Research Institute , Hamilton, Canada