If you actually believe doctors and government officials who want do dismiss the link between heavy metals and autism, check out the following stats. That group wants the legal problem to go away. The parents below want their kids to get well. Treating the problem as a heavy metal problem works well for parents, not so well for doctors, dentists and politicians.
"Detox. (chelation)" 74% report "got better", 3% report "got worse", 23% report "no effect"
The 74% rating is the best of all of the many dozens of listed interventions