@article{ref1,
title="Keep sports safe--wear a mouthguard",
journal="Journal of the American Dental Association",
year="2012",
author="",
volume="143",
number="3",
pages="312-312",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0002-8177",
doi="",
url="http://dx.doi.org/"
}