@article{ref1,
title="Epidemiology of hip fractures in the elderly: a cross-national analysis of mortality rates for femoral neck fractures",
journal="Osteoporosis international",
year="1993",
author="Heyse, S. P.",
volume="3",
number="Suppl 1",
pages="16-19",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0937-941X",
doi="",
url="http://dx.doi.org/"
}