@article{ref1,
title="Risk of exposure to CO during welding operations",
journal="Folia Medica",
year="1957",
author="Troisi, F. M. and Di paolo, E.",
volume="40",
number="5",
pages="374-385",
abstract="<p>[Abstract unavailable]</p> <p>Language: it</p>",
language="it",
issn="0015-5608",
doi="",
url="http://dx.doi.org/"
}