@article{ref1,
title="Epidemiology of osteoporosis in Japan",
journal="Osteoporosis international",
year="1997",
author="Hashimoto, Toshiaki and Sakata, K. and Yoshimura, N.",
volume="7",
number="Suppl 3",
pages="S99-102",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0937-941X",
doi="",
url="http://dx.doi.org/"
}