@article{ref1,
title=""Sport" and "non-sport" concussions",
journal="CMAJ : Canadian Medical Association journal",
year="2011",
author="Sojka, Peter",
volume="183",
number="8",
pages="887-888",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0820-3946",
doi="10.1503/cmaj.110504",
url="http://dx.doi.org/10.1503/cmaj.110504"
}