@article{ref1,
title="Epidemiology of head injury",
journal="Journal of neurology, neurosurgery, and psychiatry",
year="1996",
author="Jennett, B.",
volume="60",
number="4",
pages="362-369",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0022-3050",
doi="",
url="http://dx.doi.org/"
}