[1] Queens Univ, Dept Family Med, Ctr Studies Primary Care, Kingston, ON K7L 5N6, Canada
[2] Univ Alberta, Dept Family Med, Edmonton, AB, Canada
[3] Coll Family Phys Canada, Mississauga, ON, Canada
[4] Infoclin Inc, Toronto, ON, Canada
[5] Univ Calgary, Dept Family Med, Calgary, AB T2N 1N4, Canada
[6] Mem Univ Newfoundland, St John, NF, Canada
[7] Univ Toronto, Dept Family & Community Med, Toronto, ON M5S 1A1, Canada
[8] Dalhousie Univ, Dept Family Med, Halifax, NS, Canada
[9] Univ Montreal, Dept Family Med & Emergency Med, Quebec City, PQ, Canada
[10] Queens Univ, Dept Community Hlth & Epidemiol, Kingston, ON K7L 5N6, Canada