@article{ref1,
title="Should healthy people take calcium and vitamin D to prevent fractures? What the US Preventive Services Task Force and others say",
journal="Cleveland Clinic journal of medicine",
year="2013",
author="Dore, Robin K.",
volume="80",
number="6",
pages="341-344",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0891-1150",
doi="10.3949/ccjm.80a.13050",
url="http://dx.doi.org/10.3949/ccjm.80a.13050"
}