@article{ref1,
title="Overview and summary: Patient and visitor violence: What do we know? What can we do?",
journal="Online journal of issues in nursing",
year="2013",
author="Rosen, Jonathan",
volume="18",
number="1",
pages="-",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1091-3734",
doi="",
url="http://dx.doi.org/"
}