@article{ref1,
title="An overview of healthcare workplace violence",
journal="Healthcare hazard management monitor",
year="2009",
author="",
volume="22",
number="6",
pages="1-6",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1532-3633",
doi="",
url="http://dx.doi.org/"
}