@article{ref1,
title="Cyclists should wear helmets. Australian laws making bicycle helmets compulsory deterred people from cycling",
journal="British medical journal: BMJ",
year="1997",
author="Robinson, D. L.",
volume="314",
number="7073",
pages="69-70",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}