@article{ref1,
title="Pneumocephalus in the absence of craniofacial skull base fracture",
journal="Journal of trauma",
year="2009",
author="Choi, Yu-Yeol and Hyun, Dong-Keun and Park, Hyung-Chun and Park, Chong-Oon",
volume="66",
number="2",
pages="E24-7",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0022-5282",
doi="10.1097/01.ta.0000229049.11274.96",
url="http://dx.doi.org/10.1097/01.ta.0000229049.11274.96"
}