<http://schema.org/alternativeHeadline>
"Some parents say they intentionally delay vaccinations, because they are afraid their child is getting too many vaccines in too short a period."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/fitness-well-being/stories/many-kids-vaccinated-late-or-not-at-all>