@article{ref1,
title="Mild traumatic brain injury in U.S. soldiers returning from Iraq",
journal="New England journal of medicine",
year="2008",
author="Stonesifer, Larry D.",
volume="358",
number="20",
pages="2178; author reply 2179-2178; author reply 2179",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}