@article{ref1,
title="Sports-related recurrent brain injuries--United States. Centers for Disease Control and Prevention",
journal="International journal of trauma nursing",
year="1997",
author="",
volume="3",
number="3",
pages="88-90",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1075-4210",
doi="",
url="http://dx.doi.org/"
}