@article{ref1,
title="Epidemiology and public health impact of osteoporosis",
journal="Baillière's clinical rheumatology",
year="1993",
author="Cooper, Colin",
volume="7",
number="3",
pages="459-477",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0950-3579",
doi="",
url="http://dx.doi.org/"
}