@article{ref1,
title="Epidemiology of violence",
journal="Gaceta Medica de Mexico",
year="1980",
author="Velasco-Alzaga, J. M.",
volume="116",
number="5",
pages="201-204",
abstract="<p>[Abstract unavailable]</p> <p>Language: es</p>",
language="es",
issn="0016-3813",
doi="",
url="http://dx.doi.org/"
}