@article{ref1,
title="Trips and falls are commonest cause of patient safety incidents in NHS",
journal="British medical journal: BMJ",
year="2011",
author="Mayor, Susan",
volume="343",
number="",
pages="d5963-d5963",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}