@article{ref1,
title="Head injuries in high school and college football players",
journal="Nurse practitioner",
year="2007",
author="No Author(s) Listed, ",
volume="32",
number="11",
pages="12-12",
abstract="<p>Comments on an article  Keywords: American football; </p> <p>Language: en</p>",
language="en",
issn="0361-1817",
doi="10.1097/01.NPR.0000298264.85773.fe",
url="http://dx.doi.org/10.1097/01.NPR.0000298264.85773.fe"
}