[1] Univ Toronto, Dept Pediat, Toronto, ON, Canada
[2] Univ Toronto, Dept Family & Community Med, Toronto, ON, Canada
[3] Hosp Sick Children, PACT, 555 Univ Ave, Toronto, ON M5G 1X8, Canada
[4] Emilys House Childrens Hosp, Toronto, ON, Canada
[5] Hosp Sick Children, Dept Bioeth, Toronto, ON, Canada
[6] McGill Univ, Ingram Sch Nursing, Montreal, PQ, Canada
[7] McGill Univ, Dept Pediat, Montreal, PQ, Canada
[8] McGill Univ, Biomed Eth Unit, Montreal, PQ, Canada
[9] Montreal Childrens Hosp, Pediat Crit Care, Montreal, PQ, Canada