@article{ref1,
title="Foreign bodies in tracheobronchial tree in childhood",
journal="Journal of the Canadian Association of Radiologists",
year="1963",
author="Brown, B. S. and Ma, Honglei and Dunbar, J. S. and Macewan, D. W.",
volume="14",
number="",
pages="158-171",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0008-2902",
doi="",
url="http://dx.doi.org/"
}