@article{ref1,
title="Foreign bodies in the tracheobronchial tree",
journal="Indian pediatrics",
year="1977",
author="Gupta, A. and Chopra, K. and Saha, M. and Khanna, S. K. and Gupta, R. K. and Narayanan, P. S. and Sharma, S.",
volume="14",
number="2",
pages="133-134",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0019-6061",
doi="",
url="http://dx.doi.org/"
}