@article{ref1,
title="Helmeted versus unhelmeted motorcyclists: a dime's worth of difference",
journal="Journal of trauma",
year="2005",
author="Heller, Michael and Jacoby, J",
volume="58",
number="5",
pages="1091-1092",
abstract="Abstract unavailable.",
language="",
issn="0022-5282",
doi="",
url="http://dx.doi.org/"
}