@article{ref1,
title="Osteoporosis and the prevention of age-related fractures",
journal="Nippon Ika Daigaku Zasshi",
year="1998",
author="Takeuchi, T.",
volume="65",
number="4",
pages="324-327",
abstract="<p>[Abstract unavailable]</p><p>Language: ja</p>",
language="ja",
issn="0048-0444",
doi="",
url="http://dx.doi.org/"
}