@article{ref1,
title="Do enforced bicycle helmet laws improve public health? Evidence is conflicting",
journal="British medical journal: BMJ",
year="2006",
author="Raven, Tony",
volume="332",
number="7545",
pages="852-852",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="10.1136/bmj.332.7545.852-a",
url="http://dx.doi.org/10.1136/bmj.332.7545.852-a"
}