@article{ref1,
title="Concussions in U.S. high school sports",
journal="Journal of bone and joint surgery: American volume",
year="2012",
author="Busconi, Brian",
volume="94",
number="11",
pages="1-3",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0021-9355",
doi="10.2106/JBJS.SM.L.00174",
url="http://dx.doi.org/10.2106/JBJS.SM.L.00174"
}