@article{ref1,
title="Actually how dangerous is touch football?",
journal="Journal of school health",
year="1951",
author="Mathews, D. K. and Michaels, E. D.",
volume="21",
number="7",
pages="233-236",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0022-4391",
doi="",
url="http://dx.doi.org/"
}