@article{ref1,
title="Lessons of a hip failure. Register exists in Trent region",
journal="British medical journal: BMJ",
year="1998",
author="Harper, W. M. and Abrams, K. and Elson, R.",
volume="316",
number="7149",
pages="1985-1986",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}