@article{ref1,
title="Ethnic variation in epidemiology and rehabilitation of hip fracture",
journal="British medical journal: BMJ",
year="1994",
author="Calder, S. J. and Anderson, G. H. and Harper, W. M. and Gregg, P. J.",
volume="309",
number="6962",
pages="1124-1125",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}