@article{ref1,
title="Violent behavior of patients--can it be predicted?",
journal="Tidsskrift for den Norske Laegeforening",
year="1993",
author="Guldberg, O. F.",
volume="113",
number="2",
pages="230-231",
abstract="<p>[Abstract unavailable]</p> <p>Language: no</p>",
language="no",
issn="0029-2001",
doi="",
url="http://dx.doi.org/"
}