@article{ref1,
title="Present situation of road traffic injury in maxillofacial region",
journal="Chinese journal of stomatology",
year="2006",
author="He, Li-sheng and Liu, Yan",
volume="41",
number="12",
pages="764-766",
abstract="<p>[Abstract unavailable]</p><p>Language: zh</p>",
language="zh",
issn="1002-0098",
doi="",
url="http://dx.doi.org/"
}