[1] Queens Univ, Dept Family Med, Kingston, ON, Canada
[2] Forest Hills Family Hlth Ctr, Toronto, ON, Canada
[3] Integrated Serv Autism & Neurodev Disorders, Toronto, ON, Canada
[4] Univ Toronto, Dept Family & Community Med, Toronto, ON, Canada
[5] McMaster Univ, Dept Psychiat & Behav Neurosci, Hamilton, ON, Canada
[6] Univ Toronto, Dept Psychiat, Toronto, ON, Canada
[7] Queens Univ, Intellectual Dev Disabil Program, Dept Family Med, Kingston, ON, Canada
[8] Dalhousie Univ, Halifax, NS, Canada
[9] Univ Western Ontario, London, ON, Canada
[10] Univ Toronto, Dept Paediat, Toronto, ON, Canada
[11] Ctr Addict & Mental Hlth, Azrieli Adult Neurodev Ctr, Toronto, ON, Canada
[12] Mem Univ Newfoundland, Discipline Family Med, St John, NF, Canada