University of Chicago: Autism caused by exposure to toxins (pesticides, prescription drugs, etc.) User 33degree, in the conspiracy subreddit, 19 Aug 2014
PLOS Computational Biology: Environmental and State-Level Regulatory Factors Affect the Incidence of Autism and Intellectual Disability User adrianmonk, in the Reddit Science subreddit, 15 Mar 2014
Environmental and State-Level Regulatory Factors Affect the Incidence of Autism and Intellectual Disability (from PLOScompbiol.org) User bma449, in the Autism subreddit, 15 Mar 2014