@article{ref1,
title="Violent behaviour on psychiatric wards",
journal="Lancet",
year="1991",
author="Shah, A. K.",
volume="337",
number="8743",
pages="739-740",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0140-6736",
doi="",
url="http://dx.doi.org/"
}