@article{ref1,
title="Interventricular septal defect due to blunt trauma",
journal="Pädiatrie und pädologie",
year="1971",
author="Wimmer, M.",
volume="6",
number="1",
pages="31-35",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0030-9338",
doi="",
url="http://dx.doi.org/"
}