@article{ref1,
title="Coins, razor blades, button-sized batteries, etc. Ingested foreign bodies--when are they a true emergency?",
journal="MMW: Fortschritte der Medizin",
year="2003",
author="Scheurlen, M.",
volume="145",
number="7",
pages="45-48",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="1438-3276",
doi="",
url="http://dx.doi.org/"
}