@article{ref1,
title="Head and neck injuries in football",
journal="Journal of the Iowa Medical Society",
year="1976",
author="Wirtz, P. D.",
volume="66",
number="3",
pages="89, 102-89, 102",
abstract="<p>[Abstract unavailable]  Keywords: American football </p> <p>Language: en</p>",
language="en",
issn="0021-0587",
doi="",
url="http://dx.doi.org/"
}