[1] Univ Toronto, Div Gen Surg, Dept Surg, Toronto, ON, Canada
[2] Univ Toronto, Inst Hlth Policy Management & Evaluat, Toronto, ON, Canada
[3] Sunnybrook Res Inst, Evaluat Clin Sci, Toronto, ON, Canada
[4] ICES, Toronto, ON, Canada
[5] Univ Manitoba, Dept Community Hlth Sci, Manitoba Ctr Hlth Policy, Winnipeg, MB, Canada
[6] Univ Toronto, Dept Radiat Oncol, Toronto, ON, Canada
[7] Univ Manitoba, Sect Thorac Surg, Dept Surg, Winnipeg, MB, Canada
[8] Univ Toronto, Div Thorac Surg, Dept Surg, Toronto, ON, Canada