@article{ref1,
title="Violence prevention",
journal="Preventive medicine",
year="1994",
author="Guerra, N. G.",
volume="23",
number="5",
pages="661-664",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0091-7435",
doi="10.1006/pmed.1994.1110",
url="http://dx.doi.org/10.1006/pmed.1994.1110"
}