[1] McMaster Univ, McMaster Childrens Hosp, Dept Pediat & Crit Care, Hamilton, ON L8N 3Z5, Canada
[2] Univ Alberta, Fac Law, Edmonton, AB T6G 2M7, Canada
[3] Univ Alberta, Hlth Law Inst, Edmonton, AB T6G 2M7, Canada
[4] McMaster Univ, Dept Med, Hamilton, ON, Canada
[5] Canadian Red Cross Blood Transfus Serv, Hamilton, ON, Canada
[6] McMaster Univ, Dept Clin Epidemiol & Biostat, Hamilton, ON, Canada
[7] Univ Toronto, Div Crit Care, Toronto, ON, Canada
[8] St Michaels Hosp, Keenan Res Ctr, Toronto, ON M5B 1W8, Canada
[9] St Michaels Hosp, Li Ka Shing Knowledge Inst, Toronto, ON M5B 1W8, Canada