@article{ref1,
title="Mouthguards and sports injuries",
journal="Illinois dental journal",
year="1993",
author="Flanders, R. A.",
volume="62",
number="1",
pages="13-16",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0019-1973",
doi="",
url="http://dx.doi.org/"
}