@article{ref1,
title="Effectiveness of bicycle helmets and the ethics of legislation",
journal="Journal of the Royal Society of Medicine",
year="2004",
author="Burdett, Avery",
volume="97",
number="10",
pages="503-503",
abstract="Comment on:  J R Soc Med. 2004;97(8):410; author reply 410-1.",
language="",
issn="0141-0768",
doi="",
url="http://dx.doi.org/"
}