@article{ref1,
title="Combat plus twenty years. The effect of previous combat experience on psychiatric patients",
journal="Military medicine",
year="1969",
author="Mayfield, D. G. and Fowler, D. R.",
volume="134",
number="11",
pages="1348-1354",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0026-4075",
doi="",
url="http://dx.doi.org/"
}