[1] Univ Calgary, Libin Cardiovasc Inst Alberta, Dept Med, Calgary, AB T2N 4Z6, Canada
[2] Univ Calgary, Libin Cardiovasc Inst Alberta, Dept Community Hlth Sci, Calgary, AB T2N 4Z6, Canada
[3] Univ Calgary, Libin Cardiovasc Inst Alberta, Dept Physiol & Pharmacol, Calgary, AB T2N 4Z6, Canada
[4] Publ Hlth Agcy Canada, Ottawa, ON, Canada
[5] Univ Hlth Network, Toronto, ON, Canada
[6] Univ British Columbia, Dept Family Practice, Vancouver, BC V5Z 1M9, Canada
[7] Primary Care & Community Res Child & Family Res I, Vancouver, BC, Canada
[8] Simon Fraser Univ, Fac Hlth Sci, Burnaby, BC V5A 1S6, Canada
[9] Univ Western Ontario, Lawson Hlth Res Inst, London, ON, Canada