@article{ref1,
title="National registration of hip fractures",
journal="Acta orthopaedica",
year="2008",
author="Thorngren, K. G.",
volume="79",
number="5",
pages="580-582",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1745-3674",
doi="10.1080/17453670810016579",
url="http://dx.doi.org/10.1080/17453670810016579"
}