@article{ref1,
title="Better security measures called for to combat violence in emergency department",
journal="Journal of emergency nursing",
year="1990",
author="Sullivan, M. D.",
volume="16",
number="4",
pages="237-238",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0099-1767",
doi="",
url="http://dx.doi.org/"
}