@article{ref1,
title="Fall assessment in older people",
journal="British medical journal: BMJ",
year="2011",
author="Close, Jacqueline C. T. and Lord, Stephen R.",
volume="343",
number="online",
pages="d5153-d5153",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}