@article{ref1,
title="Sudden asphyxia of foreign body in trachea and bronchus: experience from 3 cases",
journal="Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi",
year="2018",
author="Wen, X. and Song, Y. L. and Wang, D. M. and Shi, Y. N. and Yan, Y. Y.",
volume="53",
number="9",
pages="692-693",
abstract="<p>[Abstract unavailable]</p> <p>Language: zh</p>",
language="zh",
issn="1673-0860",
doi="",
url="http://dx.doi.org/"
}