@article{ref1,
title="Effects of repeated mild head impacts in contact sports: Adding it up",
journal="Neurology",
year="2012",
author="Clark, Derek",
volume="78",
number="22",
pages="e140-e142",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0028-3878",
doi="10.1212/WNL.0b013e31825bc685",
url="http://dx.doi.org/10.1212/WNL.0b013e31825bc685"
}