@article{ref1,
title="National Highway Traffic Safety Administration. Commentary: Motorcycle helmet law repeal--a tax assessment for the rest of the United States?",
journal="Annals of emergency medicine",
year="2001",
author="Berns, S. D. and Vaca, Federico E.",
volume="37",
number="2",
pages="230-232",
abstract="Abstract unavailable.",
language="",
issn="0196-0644",
doi="",
url="http://dx.doi.org/"
}