@article{ref1,
title="Predicting lower-extremity injuries in high school football players",
journal="JAMA journal of the American Medical Association",
year="1971",
author="Clark, J. L. and Challop, R. S. and McCabe, E. B.",
volume="217",
number="11",
pages="1552-1553",
abstract="<p>[Abstract unavailable]  Keywords: American football; </p> <p>Language: en</p>",
language="en",
issn="0098-7484",
doi="",
url="http://dx.doi.org/"
}