@article{ref1,
title="Effectiveness of cycle helmets and the ethics of legislation",
journal="Journal of the Royal Society of Medicine",
year="2004",
author="Swanson, Alan",
volume="97",
number="8",
pages="410; author reply 410-1",
abstract="Abstract unavailable.",
language="",
issn="0141-0768",
doi="",
url="http://dx.doi.org/"
}