@article{ref1,
title="Acute airway obstruction--an unusual cause",
journal="Journal of accident and emergency medicine",
year="1999",
author="Williamson, D. and Llewellyn, T.",
volume="16",
number="2",
pages="157-157",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1351-0622",
doi="",
url="http://dx.doi.org/"
}