@article{ref1,
title="National Highway Traffic Safety Administration. evaluation of the repeal of motorcycle helmet laws",
journal="Annals of emergency medicine",
year="2001",
author="Todd, K. H. and Runge, Jeffrey W. and Jolly, B. T. and Harris, JS and Berns, S. D. and Vaca, Federico E.",
volume="37",
number="2",
pages="229-230",
abstract="Abstract unavailable.",
language="",
issn="0196-0644",
doi="",
url="http://dx.doi.org/"
}