?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Charman%2C+Tony&rft.aufirst=Tony&rft.aulast=Charman&rft.volume=191&rft.date=December+2007&rft.title=British+Journal+of+Psychiatry&rft.atitle=Efficacy+of+three+screening+instruments+in+the+identification+of+autism+spectrum+disorder&rft.pages=554-559&rft.issn=0007-1250&rft.genre=article