@article{ref1,
title="Frailty and fall prevention",
journal="Nippon Ronen Igakkai Zasshi",
year="2012",
author="Kozaki, Koichi",
volume="49",
number="1",
pages="58-59",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0300-9173",
doi="",
url="http://dx.doi.org/"
}