@article{ref1,
title="Foreign body in the trachea and bronchus",
journal="Jibi inkōka Otolaryngology",
year="1969",
author="Takayama, O.",
volume="41",
number="10",
pages="816-818",
abstract="<p>[Abstract unavailable]</p><p>Language: ja</p>",
language="ja",
issn="0386-9679",
doi="",
url="http://dx.doi.org/"
}