@article{ref1,
title="Head concussion guidelines",
journal="American family physician",
year="1995",
author="McNabb, J. W.",
volume="51",
number="4",
pages="742-742",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-838X",
doi="",
url="http://dx.doi.org/"
}