@article{ref1,
title="Evidence-based emergency medicine/systematic review abstract. Helmets for preventing head, brain, and facial injuries in cyclists",
journal="Annals of emergency medicine",
year="2003",
author="Bazarian, Jeffrey J.",
volume="41",
number="5",
pages="738-740",
abstract="Abstract unavailable.",
language="",
issn="0196-0644",
doi="10.1067/mem.2003.142",
url="http://dx.doi.org/10.1067/mem.2003.142"
}