?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Emily&rft.au=Simonoff%2C+Emily&rft.aulast=Simonoff&rft.issn=0890-8567&rft.date=August+2008&rft.pages=921-929&rft.title=Journal+of+the+American+Academy+of+Child+and+Adolescent+Psychiatry&rft.volume=47&rft.atitle=Psychiatric+disorders+in+children+with+autism+spectrum+disorders%3A+Prevalence%2C+comorbidity+and+associated+factors+in+a+population-derived+sample&rft.genre=article