@article{ref1,
title="A study of choking/obstructed airway incidents",
journal="QRB. quality review bulletin",
year="1983",
author="Heizer, D. E. and Hsieh, H.",
volume="9",
number="3",
pages="87-88",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0097-5990",
doi="",
url="http://dx.doi.org/"
}