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"More than 90% of gay and bisexual men in the United States have used lubricants to enhance a wide range of sexual activities, including but not limited to anal intercourse, researchers report in a Journal of Sexual Medicine study."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2014-08-gay-bisexual-men-states-lubricants.html>