@article{ref1,
title="Tracheobronchial foreign body aspiration in childhood",
journal="Medizinische Klinik [Urban und Schwarzenberg]",
year="1974",
author="Butenandt, I. and Mantel, K.",
volume="69",
number="49",
pages="2017-2023",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0025-8458",
doi="",
url="http://dx.doi.org/"
}