@article{ref1,
title="Accident and pregnancy from the obstetrical viewpoint",
journal="Zeitschrift fur Arztliche Fortbildung (Jena)",
year="1968",
author="Heiss, H.",
volume="62",
number="7",
pages="397-401",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0044-2178",
doi="",
url="http://dx.doi.org/"
}