@article{ref1,
title="The evaluation of athletes with cerebral concussion",
journal="Clinical neurosurgery",
year="2002",
author="Maroon, Joseph C. and Field, Mel and Lovell, Mark and Collins, Michael and Bost, Jeffrey W.",
volume="49",
number="",
pages="319-332",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0069-4827",
doi="",
url="http://dx.doi.org/"
}