<http://schema.org/description>
"(Medical Xpress)\u2014In 2000, researchers at the UCLA Center for Sleep Research published findings showing that people suffering from narcolepsy, a disorder characterized by uncontrollable periods of deep sleep, had 90 percent fewer neurons containing the neuropeptide hypocretin in their brains than healthy people. The study was the first to show a possible biological cause of the disorder."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2013-07-clue-human-narcolepsy.html>