@article{ref1,
title="In response to: American professional football concussions during the 2013 to 2014 season",
journal="Clinical journal of sport medicine",
year="2016",
author="Sorani, Marco D. and Ferguson, Adam R.",
volume="26",
number="4",
pages="345-345",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1050-642X",
doi="10.1097/JSM.0000000000000249",
url="http://dx.doi.org/10.1097/JSM.0000000000000249"
}