<http://schema.org/alternativeHeadline>
"During a six-minute walking test, patients taking testosterone therapy walked an average of 177 feet farther (54 meters) than those taking a placebo."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/fitness-well-being/stories/testosterone-supplements-may-help-heart-failure-patients>