@article{ref1,
title="Compulsory helmets for cyclists",
journal="Journal of the Royal Society of Medicine",
year="2004",
author="Gandevia, S.",
volume="97",
number="12",
pages="612-612",
abstract="Abstract unavailable.",
language="",
issn="0141-0768",
doi="10.1258/jrsm.97.12.612",
url="http://dx.doi.org/10.1258/jrsm.97.12.612"
}