@article{ref1,
title="Health survey of transportation employees of the Gothenburg trolley lines",
journal="Lakartidningen",
year="1977",
author="Bjurö, T. and Blume, N. R. and Ericson, J. and Hedenberg, L. and Skommargård, M. and Svenker, U.",
volume="74",
number="31",
pages="2643-2646",
abstract="<p>[Abstract unavailable]</p><p>Language: sv</p>",
language="sv",
issn="0023-7205",
doi="",
url="http://dx.doi.org/"
}