@article{ref1,
title="'Don't let kids play football': a killer idea",
journal="British journal of sports medicine",
year="2016",
author="MacDonald, James and Myer, Gregory D.",
volume="51",
number="20",
pages="1448-1449",
abstract="<p>[Abstract unavailable]  Keywords: American football; soccer</p> <p>Language: en</p>",
language="en",
issn="0306-3674",
doi="10.1136/bjsports-2016-096833",
url="http://dx.doi.org/10.1136/bjsports-2016-096833"
}