@article{ref1,
title="Swallowed foreign bodies in childhood",
journal="Zentralblatt fur Chirurgie",
year="1973",
author="Schramm, H. and Mohr, F.",
volume="98",
number="7",
pages="237-241",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-409X",
doi="",
url="http://dx.doi.org/"
}