@article{ref1,
title="Prevention of swallowing or aspiration of foreign objects",
journal="Journal of the American Dental Association",
year="1978",
author="Barkmeier, W. W. and Cooley, R. L. and Abrams, H.",
volume="97",
number="3",
pages="473-476",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-8177",
doi="",
url="http://dx.doi.org/"
}