One of the U.S. leading autism experts (Harvard MD) has co-written papers on the plausible link between low-level electromagnetic field exposure and autism spectrum disorders. The key here is also: oxidative stress, brain inflammation and blood-brain-barrier damage - as in Dr. Palls review.
Ref 1:
https://www.ncbi.nlm.nih.gov/pubmed/24095003
Ref 2:
https://www.ncbi.nlm.nih.gov/pubmed/24113318