<http://schema.org/alternativeHeadline>
"A new study shows epidurals can actually lengthen labor longer than previously thought, bringing to question current standards 'normal labor.'"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/family/babies-pregnancy/stories/epidurals-how-much-do-they-prolong-labor>