<http://schema.org/about>
"Women who live in areas with polluted air are up to twice as likely to have an autistic child than those living in communities with cleaner air."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/fitness-well-being/stories/new-study-strengthens-link-between-autism-and-air-pollution>