@article{ref1,
title="Brain injury in amateur soccer players",
journal="JAMA journal of the American Medical Association",
year="2000",
author="Donders, J. and Grote, C.",
volume="283",
number="7",
pages="882-883",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0098-7484",
doi="",
url="http://dx.doi.org/"
}