@article{ref1,
title="Vitamin d supplement intake in elderly fallers",
journal="Journal of the American Geriatrics Society",
year="2009",
author="Kiehn, Kathryn A. and Mahoney, Jane and Jones, Andrea N. and Hansen, Karen E.",
volume="57",
number="1",
pages="176-177",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0002-8614",
doi="10.1111/j.1532-5415.2009.02065.x",
url="http://dx.doi.org/10.1111/j.1532-5415.2009.02065.x"
}