Hi. I have no experience with Autism, but recently came across something interesting while researching out a related issue. Autism Research Institute published the “Treatment Options for Mercury/Metal Toxicity in Autism and Related Developmental Disabilities: Consensus Position Paper,” in February 2005. In it they rate mercury and heavy metal detoxification as the singular most helpful biomedical treatment for autism based on over three decades of experience of autistic children and their parents.
Also, here a few other websites: