@article{ref1,
title="Motorcycle helmet use study",
journal="Western journal of medicine",
year="1992",
author="Frank, Elmar and White, Richard",
volume="156",
number="2",
pages="210-210",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0093-0415",
doi="",
url="http://dx.doi.org/"
}