and honestly, this has been studied to death by the medical community, and it's beyond ludicrous to suggest everyone in the medical community who has done a study is being paid off by vaccine manufacturers.
The numbers just plain don't work.
Information on the true incidence is at
http://www.neurodiversity.com/autism_prevalence.htmlArticles on the multiple causes being examined are at:
http://www.neurodiversity.com/etiology.htmlAnother article on likely causes is at:
http://www.srmhp.org/0101/autism.html This article has been reprinted by Quackwatch, a good place to find debunks of pseudoscience.
All the anti thimerosol people have on their side are numbers that don't work (e.g. autism extremely rare for 60 years after thimerosol's introduction) and a wealth of anecdotal evidence. If you want a scientific study of this issue. please consult the scientific literature.