[1] McMaster Univ, Dept Med, Div Cardiol, Hamilton, ON, Canada
[2] McMaster Univ, Dept Hlth Res Methods Evidence & Impact, Hamilton, ON, Canada
[3] Populat Hlth Res Inst, Hamilton, ON, Canada
[4] David Braley Cardiac Vasc & Stroke Res Inst, 237 Barton St East, Hamilton, ON L8L 2X2, Canada