@article{ref1,
title="A study of the type and cost of football injuries: a single season in a Minnesota high school",
journal="Minnesota medicine",
year="1986",
author="Thompson, R. R.",
volume="69",
number="11",
pages="656-658",
abstract="<p>[Abstract unavailable]  Keywords: American football; </p> <p>Language: en</p>",
language="en",
issn="0026-556X",
doi="",
url="http://dx.doi.org/"
}