@article{ref1,
title="Helmet use and maxillofacial injuries sustained following low speed motorcycle accidents",
journal="Injury",
year="2002",
author="Dickenson, A. J. and Yates, J. M.",
volume="33",
number="6",
pages="479-483",
abstract="Abstract unavailable.",
language="",
issn="0020-1383",
doi="",
url="http://dx.doi.org/"
}