@article{ref1,
title="Tooth loss and hip fractures in the elderly",
journal="Journal of bone and joint surgery: British volume",
year="1990",
author="Aström, J. and Bäckström, C. and Thidevall, G.",
volume="72",
number="2",
pages="324-325",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0301-620X",
doi="",
url="http://dx.doi.org/"
}