@article{ref1,
title="Bicycle helmets. Using helmets alone will not prevent serious bicycle injuries",
journal="British medical journal: BMJ",
year="2001",
author="Jacobsen, P.",
volume="322",
number="7293",
pages="1064-1064",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}