[1] Univ Toronto, Dalla Lana Sch Publ Hlth, Toronto, ON, Canada
[2] McMaster Univ, Dept Family Med, Hamilton, ON, Canada
[3] McMaster Univ, Dept Hlth Res Methods Evidence & Impact, Hamilton, ON, Canada
[4] Ctr Hlth Econ & Policy Anal, Hamilton, ON, Canada
[5] Univ British Columbia, Ctr Hlth Serv & Policy Res, Sch Nursing, Vancouver, BC, Canada
[6] Univ Manitoba, Dept Community Hlth Sci, Rady Fac Hlth Sci, Winnipeg, MB, Canada
[7] Univ Manitoba, Dept Family Med Rady Fac Hlth Sci, Winnipeg, MB, Canada
[8] Coll Family Phys Canada, Mississauga, ON, Canada