@article{ref1,
title="Medical surveillance in industry",
journal="Journal of Occupational Medicine",
year="1973",
author="Dixon, E. M.",
volume="15",
number="10",
pages="796-798",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-1736",
doi="",
url="http://dx.doi.org/"
}