@article{ref1,
title="Do bicycle safety helmets reduce severity of head injury in real crashes?",
journal="Journal of safety research",
year="1988",
author="Dorsch, M. M. and Somers, R. L. and Woodward, Alistair J.",
volume="19",
number="2",
pages="99-99",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0022-4375",
doi="",
url="http://dx.doi.org/"
}