@article{ref1,
title="Persistent post-traumatic stress disorder",
journal="British medical journal: BMJ",
year="1994",
author="Stark, C. and Lee, J. and Robb, E. and Kidd, B.",
volume="309",
number="6966",
pages="1439-1440",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}