@article{ref1,
title="Cognitive dysfunction and contact sports",
journal="JAMA neurology",
year="2013",
author="Diaz-Arrastia, Ramon and Perl, Daniel",
volume="70",
number="3",
pages="301-302",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="2168-6149",
doi="10.1001/jamaneurol.2013.1930",
url="http://dx.doi.org/10.1001/jamaneurol.2013.1930"
}