@article{ref1,
title="Post-traumatic stress disorder",
journal="New England journal of medicine",
year="2002",
author="Breslau, Naomi",
volume="346",
number="19",
pages="1495-8; author reply 1495",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}