@article{ref1,
title="Head and neck injuries in football",
journal="Journal of the Indiana State Medical Association",
year="1970",
author="Maroon, J. C. and Healion, T.",
volume="63",
number="9",
pages="995-999",
abstract="<p>[Abstract unavailable]  Keywords: American football; </p> <p>Language: en</p>",
language="en",
issn="0019-6770",
doi="",
url="http://dx.doi.org/"
}