[1] Western Univ, London Hlth Sci Ctr, Dept Med, London, ON, Canada
[2] Western Univ, Dept Epidemiol & Biostat, London, ON, Canada
[3] Western Univ, Dept Family Med, London, ON, Canada
[4] Western Univ, Div Cardiol, London, ON, Canada
[5] Trillium Gift Life Network, Toronto, ON, Canada
[6] McMaster Univ, Div Emergency Med, Dept Med, Hamilton, ON, Canada
[7] Univ Ottawa, Dept Pediat, Ottawa, ON, Canada
[8] Childrens Hosp Eastern Ontario, Ottawa, ON, Canada
[9] Childrens Hosp Eastern Ontario, Div Pediat Crit Care, Ottawa, ON, Canada
[10] CHU Quebec, Ctr Mere Enfant Soleil, Div Pediat Intens Care, Quebec City, PQ, Canada
[11] Univ Laval, Fac Med, Dept Pediat, Quebec City, PQ, Canada
[12] Univ Laval, CHU Quebec Univ Laval Res Ctr, Populat Hlth & Optimal Hlth Practices Res Unit, Traumatol Emergency Crit Care Med, Quebec City, PQ, Canada
[13] Montreal Childrens Hosp, Canadian Blood Serv, Deceased Organ Donat, Montreal, PQ, Canada
[14] Montreal Childrens Hosp, Div Crit Care Med, Montreal, PQ, Canada
[15] McGill Univ, Hlth Ctr & Res Inst, Montreal, PQ, Canada