@article{ref1,
title="Injury risk in men's university football",
journal="Clinical journal of sport medicine",
year="2003",
author="Kohl, Harold W.",
volume="13",
number="6",
pages="386-387",
abstract="<p>[Abstract unavailable]  Keywords: American football </p> <p>Language: en</p>",
language="en",
issn="1050-642X",
doi="",
url="http://dx.doi.org/"
}