<http://schema.org/about>
"Mercury does not cause autism, another study now concludes. The levels of mercury in the urine of children with autism were no higher than urine mercury levels"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/fitness-well-being/stories/new-study-another-blow-to-mercury-autism-connection>