@article{ref1,
title="Should we prescribe vitamin D and calcium to old persons to prevent falls and fractures?",
journal="Journal of the American Geriatrics Society",
year="2006",
author="Cheng, H-Y",
volume="54",
number="7",
pages="1155-1156",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0002-8614",
doi="10.1111/j.1532-5415.2006.00781.x",
url="http://dx.doi.org/10.1111/j.1532-5415.2006.00781.x"
}