@article{ref1,
title="Pregnancy-associated osteoporosis",
journal="Yonsei medical journal",
year="1988",
author="Chung, H. C. and Lim, S. K. and Lee, M. K. and Lee, M. H. and Huh, K. B.",
volume="29",
number="3",
pages="286-294",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0513-5796",
doi="",
url="http://dx.doi.org/"
}