@article{ref1,
title="Mouth guards essential--all sports hazardous",
journal="Journal of the Canadian Dental Association",
year="1979",
author="",
volume="45",
number="6",
pages="272, 280-272, 280",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0709-8936",
doi="",
url="http://dx.doi.org/"
}