@article{ref1,
title="Certification of cause of death in patients dying soon after proximal femoral fracture",
journal="British medical journal: BMJ",
year="1996",
author="Calder, S. J. and Anderson, G. H. and Gregg, P. J.",
volume="312",
number="7045",
pages="1515-1515",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}