[1] IWK Hlth Ctr, 5850-5980 Univ Ave, Halifax, NS B3K 6R8, Canada
[2] Queens Univ, Ctr Neurosci Studies, Kingston, ON, Canada
[3] Queens Univ, Dept Biomed & Mol Sci, Kingston, ON, Canada
[4] Dalhousie Univ, Fac Sci, Dept Psychiat, Halifax, NS, Canada
[5] Dalhousie Univ, Dept Pediat, Fac Sci, Halifax, NS, Canada
[6] Dalhousie Univ, Dept Community Hlth & Epidemiol, Halifax, NS, Canada
[7] Dalhousie Univ, Halifax, NS, Canada
[8] Lakehead Univ, Dept Psychol, Thunder Bay, ON P7B 5E1, Canada
[9] Lakehead Univ, Northern Ontario Sch Med, Thunder Bay, ON P7B 5E1, Canada
[10] Univ Saskatchewan, Dept Community Hlth & Epidemiol, Saskatoon, SK, Canada
[11] Univ Turku, Res Ctr Child Psychiat, Turku, Finland
[12] Publ Hlth Agcy Canada, Ottawa, ON, Canada