@article{ref1,
title="Mandatory helmets",
journal="Connecticut medicine",
year="2012",
author="Bentivegna, Joseph",
volume="76",
number="10",
pages="653; author reply 653-653; author reply 653",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0010-6178",
doi="",
url="http://dx.doi.org/"
}