1. Department of Medicine McMaster University Hamilton Ontario Canada
2. Department of Health Research Methods, Evidence, and Impact McMaster University Hamilton Ontario Canada
3. Population Health Research Institute Hamilton Ontario Canada
4. ICES, McMaster University Hamilton Ontario Canada
5. Keele Cardiovascular Research Group Keele University Keele UK
6. Cardiology Division, Massachusetts General Hospital and Division of Heart Failure Trials Baim Institute for Clinical Research Boston MA USA
7. Sunnybrook Health Sciences Centre and ICES Toronto Ontario Canada