@article{ref1,
title="Do bicycle helmets protect, and should they be mandatory?",
journal="JAMA journal of the American Medical Association",
year="1997",
author="Bayliss, J.",
volume="277",
number="11",
pages="883; author reply 884-883; author reply 884",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0098-7484",
doi="",
url="http://dx.doi.org/"
}