@article{ref1,
title="Post-traumatic stress disorder",
journal="New England journal of medicine",
year="2002",
author="Apolone, Giovanni and Mosconi, Paola and La Vecchia, Carlo",
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="10.1056/NEJM200205093461913",
url="http://dx.doi.org/10.1056/NEJM200205093461913"
}