[1] McGill Univ, Res Inst, Ctr Outcomes Res & Evaluat, Hlth Ctr, Montreal, PQ, Canada
[2] McGill Univ, Dept Epidemiol & Biostat, Montreal, PQ, Canada
[3] McGill Univ, Hlth Ctr, Div Gen Internal Med, Montreal, PQ, Canada
[4] McGill Univ, Fac Med & Hlth Sci, Dept Family Med, Montreal, PQ, Canada
[5] Univ Alberta, Edmonton, AB, Canada
[6] McGill Univ, Hlth Ctr, Div Cardiol, Montreal, PQ, Canada