@article{ref1,
title="Vertebral and hip fractures in Japan",
journal="Bulletin of The World Health Organization",
year="1999",
author="Nakamura, T. and Fujiwara, S.",
volume="77",
number="5",
pages="430-431",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0042-9686",
doi="",
url="http://dx.doi.org/"
}