[1] Univ Toronto, Joint Ctr Bieoth, Appl Psychol & Human Dev, Toronto, ON M5S 1V6, Canada
[2] Hosp Sick Children, Bioeth Dept, Toronto, ON, Canada
[3] Univ Toronto, Dept Paediat, Toronto, ON, Canada
[4] Hosp Sick Children, Paediat Adv Care Team, Toronto, ON, Canada
[5] Emilys House Childrens Hosp, Toronto, ON, Canada
[6] Univ Toronto, Dept Family & Community Med, Toronto, ON, Canada