@article{ref1,
title="Physical symptoms related to post-traumatic stress disorder (PTSD) in an aging population",
journal="Military medicine",
year="1988",
author="Lipton, M. I. and Schaffer, W. R.",
volume="153",
number="6",
pages="316-318",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0026-4075",
doi="",
url="http://dx.doi.org/"
}