@article{ref1,
title="Mouthguards, headgear not worn regularly",
journal="Journal of the American Dental Association",
year="1996",
author="",
volume="127",
number="4",
pages="432-432",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-8177",
doi="",
url="http://dx.doi.org/"
}