Conditions InDepth: Autism
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http://www.autism-society.org/what-is. Accessed May 14, 2013.
Autism. American Academy of Pediatrics Healthy Children website. Available at:
https://www.healthychildren.org/English/health-issues/conditions/Autism/Pages/default.aspx. Updated January 31, 2013. Accessed May 13, 2013.
Autism spectrum disorder. National Institute of Mental Health website. Available at:
Updated May 14, 2013. Accessed May 14, 2013.
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Updated August 7, 2012. Accessed May 14, 2013.
Causes. The Autism Society website. Available at:
http://www.autism-society.org/what-is/causes. Accessed May 14, 2013.
12/31/2009 DynaMed's Systematic Literature Surveillance
http://www.ebscohost.com/dynamed: Rice C. Prevalence of autism spectrum disorders—Autism and Developmental Disabilities Monitoring Network, United States, 2006.
MMWR Surveill Summ. 2009;58(SS10):1.