<http://schema.org/alternativeHeadline>
"Health experts still baffled at the cause of this condition that affects so many U.S. children."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/fitness-well-being/blogs/autism-cases-on-the-rise-1-in-68-kids-affected-says-the-cdc>