@article{ref1,
title="Impact of repeal of motorcycle helmet law",
journal="Surgery, gynecology and obstetrics",
year="1980",
author="McSwain, Norman E. and Lummis, M.",
volume="151",
number="2",
pages="215-224",
abstract="Abstract unavailable.",
language="",
issn="0039-6087",
doi="",
url="http://dx.doi.org/"
}