@article{ref1,
title="National High School Athletic Injury Registry",
journal="American journal of sports medicine",
year="1988",
author="Powell, J. W.",
volume="16",
number="Suppl 1",
pages="S134-135",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0363-5465",
doi="",
url="http://dx.doi.org/"
}