@article{ref1,
title="Concussion in sports. Foreword",
journal="Clinics in sports medicine",
year="2011",
author="Miller, Mark D.",
volume="30",
number="1",
pages="xv-xv",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0278-5919",
doi="10.1016/j.csm.2010.09.009",
url="http://dx.doi.org/10.1016/j.csm.2010.09.009"
}