@article{ref1,
title="Some epidemiologic factors associated with intramural football injuries on a rural college campus",
journal="Journal of the American College Health Association",
year="1971",
author="Kraus, Jess Frank and Colberg, G.",
volume="20",
number="2",
pages="106-114",
abstract="<p>[Abstract unavailable]  Keywords: American football; Touch football; Flag football </p> <p>Language: en</p>",
language="en",
issn="0002-7944",
doi="",
url="http://dx.doi.org/"
}