@article{ref1,
title="Esophageal foreign bodies",
journal="Zeitschrift fur Arztliche Fortbildung (Jena)",
year="1973",
author="Apelt, L. and Ramshorn, R.",
volume="67",
number="3",
pages="124-126",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-2178",
doi="",
url="http://dx.doi.org/"
}