@article{ref1,
title="Unreported concussion in high school football players",
journal="Clinical journal of sport medicine",
year="2005",
author="Garrick, James G.",
volume="15",
number="5",
pages="385; author reply 385-385; author reply 385",
abstract="<p>[Abstract unavailable]  Keywords: American football </p> <p>Language: en</p>",
language="en",
issn="1050-642X",
doi="",
url="http://dx.doi.org/"
}