[1] Hosp Sick Children, Program Neurosci & Mental Hlth, Toronto, ON M5G 1X8, Canada
[2] Univ Toronto, Dept Surg, Toronto, ON, Canada
[3] Univ Toronto, Dept Psychol, Toronto, ON M5S 1A1, Canada
[4] Univ Guelph, Dept Psychol, Guelph, ON N1G 2W1, Canada
[5] Peel Childrens Ctr, Mississauga, ON, Canada
[6] McMaster Univ, Dept Pediat, Hamilton, ON, Canada
[7] Baylor Coll Med, Houston, TX 77030 USA