@article{ref1,
title="Posttraumatic stress disorder and meaning: structuring human chaos",
journal="Journal of nervous and mental disease",
year="1992",
author="Ursano, R. J. and Kao, T. C. and Fullerton, C. S.",
volume="180",
number="12",
pages="756-759",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0022-3018",
doi="",
url="http://dx.doi.org/"
}