@article{ref1,
title="Effects of the September 11th attacks on symptoms of PTSD on community-dwelling older persons in the Netherlands",
journal="International journal of geriatric psychiatry",
year="2003",
author="van Zelst, Willeke and de Beurs, Edwin and Smit, Johannes H.",
volume="18",
number="2",
pages="190-190",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0885-6230",
doi="10.1002/gps.758",
url="http://dx.doi.org/10.1002/gps.758"
}