@article{ref1,
title="Polytrauma in pregnancy. A review",
journal="Gynäkologische Rundschau",
year="1989",
author="Bettex, J. D. and Schneider, H.",
volume="29",
number="3",
pages="129-147",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0017-6001",
doi="",
url="http://dx.doi.org/"
}