@article{ref1,
title="Air Force football injuries. A clinical and statistical study",
journal="JAMA journal of the American Medical Association",
year="1968",
author="Allen, M. L.",
volume="206",
number="5",
pages="1053-1058",
abstract="<p>[Abstract unavailable]  Keywords: American football  </p> <p>Language: en</p>",
language="en",
issn="0098-7484",
doi="",
url="http://dx.doi.org/"
}