@article{ref1,
title="Professional hazards in the states of the Republic. Comparative statistical study",
journal="Gaceta Medica de Mexico",
year="1965",
author="Arreguín, E.",
volume="95",
number="6",
pages="513-527",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0016-3813",
doi="",
url="http://dx.doi.org/"
}