[1] Hosp Sick Children, Div Clin & Metab Genet, Toronto, ON M5G 1X8, Canada
[2] Univ Toronto, Dept Mol Genet, Toronto, ON, Canada
[3] Hosp Sick Children, Autism Res Unit, Toronto, ON M5G 1X8, Canada
[4] Holland Bloorview Kids Rehabil Hosp, Toronto, ON, Canada
[5] Univ Toronto, Dept Pediat, Toronto, ON, Canada
[6] Hosp Sick Children, Ctr Appl Genom, Toronto, ON M5G 1X8, Canada
[7] Hosp Sick Children, Program Genet & Genome Biol, Toronto, ON M5G 1X8, Canada
[8] Mt Sinai Hosp, Dept Obstet & Gynecol, Prenatal Diag & Med Genet Program, Toronto, ON M5G 1X5, Canada
[9] Univ Toronto, Inst Hlth Policy Management & Evaluationred, Toronto, ON, Canada