@article{ref1,
title="Hip fractures in the elderly--epidemiology, injury mechanisms, and prevention with an external hip protector",
journal="Annales chirurgiae et gynaecologiae",
year="1998",
author="Parkkari, Jari",
volume="87",
number="1",
pages="69-71",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0355-9521",
doi="",
url="http://dx.doi.org/"
}