@article{ref1,
title="Images in emergency medicine. Traumatic pneumatocele",
journal="Annals of emergency medicine",
year="2007",
author="Cai, Ming-Huang and Lee, Wei-Jing",
volume="49",
number="1",
pages="111, 123-111, 123",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0196-0644",
doi="10.1016/j.annemergmed.2006.04.017",
url="http://dx.doi.org/10.1016/j.annemergmed.2006.04.017"
}