@article{ref1,
title="Danger! Why do old people fall?",
journal="Xianggang Hu Li Za Zhi",
year="1980",
author="Barrowclough, F.",
volume="",
number="28",
pages="42-44",
abstract="<p>[Abstract unavailable]</p><p>Language: zh</p>",
language="zh",
issn="0073-3253",
doi="",
url="http://dx.doi.org/"
}