@article{ref1,
title="Posttraumatic stress disorder symptomatology in Vietnam veterans before and after September 11",
journal="Journal of nervous and mental disease",
year="2003",
author="Niles, Barbara L. and Wolf, Erika J. and Kutter, Catherine J.",
volume="191",
number="10",
pages="682-684",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-3018",
doi="10.1097/01.nmd.0000092178.45511.e6",
url="http://dx.doi.org/10.1097/01.nmd.0000092178.45511.e6"
}