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Esbensen AJ, Greenberg JS, Seltzer MM, Aman MG.Esbensen AJ, et al.J Autism Dev Disord. 2009 Sep;39(9):1339-49. doi: 10.1007/s10803-009-0750-3. Epub 2009 May 12.J Autism Dev Disord. 2009.PMID: 19434487Free PMC article.