@article{ref1,
title="Swallowed foreign bodies in childhood",
journal="Zentralblatt fur Chirurgie",
year="1971",
author="Maroske, D. and Nitschke, J.",
volume="96",
number="14",
pages="457-464",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-409X",
doi="",
url="http://dx.doi.org/"
}