@article{ref1,
title="Traumatic brain injury",
journal="Revista de saude publica",
year="1999",
author="Barros, A. J.",
volume="33",
number="5",
pages="531-532",
abstract="<p>[Abstract unavailable]</p><p>Language: pt</p>",
language="pt",
issn="0034-8910",
doi="",
url="http://dx.doi.org/"
}