@article{ref1,
title="Observations on cases of foreign bodies of the trachea and bronchus",
journal="Hellenike Iatrike",
year="1961",
author="Polyzoides, S.",
volume="30",
number="",
pages="723-727",
abstract="<p>[Abstract unavailable]</p><p>Language: el</p>",
language="el",
issn="0258-2694",
doi="",
url="http://dx.doi.org/"
}