@article{ref1,
title="Mortality among gas workers",
journal="Ugeskrift for Laeger",
year="1986",
author="Hansen, K. S. and Viskum, S. and Pedersen, M. S.",
volume="148",
number="10",
pages="610-612",
abstract="<p>[Abstract unavailable]</p><p>Language: da</p>",
language="da",
issn="0041-5782",
doi="",
url="http://dx.doi.org/"
}