@article{ref1,
title="Motorcycle helmet laws: every surgeon's responsibility",
journal="Journal of the American Academy of Surgeons",
year="2004",
author="Speetzen, Larisa and Schermer, Carol R. and Knudson, M. M.",
volume="199",
number="2",
pages="261-264",
abstract="Abstract unavailable.",
language="",
issn="1072-7515",
doi="10.1016/j.jamcollsurg.2004.03.020",
url="http://dx.doi.org/10.1016/j.jamcollsurg.2004.03.020"
}