@article{ref1,
title="Bicycles and head injuries. a prospective study from Trondelag 1979-1980]",
journal="Tidsskrift for den Norske Laegeforening",
year="1983",
author="Cappelen, J. and Edna, Tom-Harald",
volume="103",
number="17-18",
pages="1376-1378",
abstract="<p>[Abstract unavailable]</p> <p>Language: no</p>",
language="no",
issn="0029-2001",
doi="",
url="http://dx.doi.org/"
}