[1] McGill Univ, Div Cardiol, Ctr Hlth, Montreal, PQ H3T 1E2, Canada
[2] McGill Univ, Dept Epidemiol Biostat & Occupat Hlth, Jewish Gen Hosp, Montreal, PQ H3T 1E2, Canada
[3] McGill Univ, Div Cardiol, Jewish Gen Hosp, Montreal, PQ H3T 1E2, Canada
[4] McGill Univ, Div Clin Epidemiol, Jewish Gen Hosp, Montreal, PQ H3T 1E2, Canada