@article{ref1,
title="Good helmet, bicycle paths and information are necessary to reduce the risks in bicycling",
journal="Lakartidningen",
year="1981",
author="Lind, M. G. and Wollin, S.",
volume="78",
number="32-33",
pages="2744-2746",
abstract="Abstract unavailable.",
language="",
issn="0023-7205",
doi="",
url="http://dx.doi.org/"
}