@article{ref1,
title="Demographics are an important aspect of any study",
journal="Journal of trauma",
year="1999",
author="Porter, J. M.",
volume="47",
number="2",
pages="437-437",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-5282",
doi="",
url="http://dx.doi.org/"
}