@article{ref1,
title="High school football injuries",
journal="Southern medical journal",
year="1976",
author="Cooper, D. L.",
volume="69",
number="10",
pages="1257-1257",
abstract="<p>[Abstract unavailable]   Keywords: American football</p> <p>Language: en</p>",
language="en",
issn="0038-4348",
doi="",
url="http://dx.doi.org/"
}