@article{ref1,
title="Is the helmet campaign an effective way to prevent injuries? analysis of attitudes among adults and teenagers",
journal="Lakartidningen",
year="1995",
author="Bjornstig, Ulf and Andersson, Petra",
volume="92",
number="7",
pages="662-665",
abstract="Abstract unavailable.",
language="",
issn="0023-7205",
doi="",
url="http://dx.doi.org/"
}