@article{ref1,
title="Hip fractures in healthy patients",
journal="British medical journal (clinical research edition)",
year="1987",
author="",
volume="294",
number="6564",
pages="119-120",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0267-0623",
doi="",
url="http://dx.doi.org/"
}