[1] Womens Coll Hosp, Toronto, ON, Canada
[2] Univ Toronto, Inst Hlth Policy Management & Evaluat, Toronto, ON, Canada
[3] Univ Fed Rio Grande do Sul, Dept Social Med, Porto Alegre, RS, Brazil
[4] Univ Fed Rio Grande do Sul, TelessaudeRS, Porto Alegre, RS, Brazil
[5] Univ British Columbia, Dept Family Practice, Vancouver, BC, Canada
[6] Univ Fed Pelotas, Dept Social & Prevent Dent, Pelotas, RS, Brazil
[7] Univ Ottawa, Dept Family Med, Ottawa, ON, Canada
[8] Coll Family Phys Canada, Besrour Ctr, Mississauga, ON, Canada