[1] Sunnybrook Hlth Sci Ctr, Div Gen Surg, 2075 Bayview Ave,Room H186, Toronto, ON M4N 3M5, Canada
[2] Univ Toronto, Inst Hlth Policy Management & Evaluat, Toronto, ON, Canada
[3] Univ Toronto, Dept Surg, Toronto, ON, Canada
[4] Univ Toronto, Dept Med, Interdept Div Crit Care Med, Toronto, ON, Canada
[5] Sunnybrook Res Inst, Toronto, ON, Canada
[6] Amer Coll Surg, Trauma Qual Improvement Program, Chicago, IL USA
[7] ICES, Toronto, ON, Canada