@article{ref1,
title="Traumatic injuries of primary and young permanent anterior teeth",
journal="Gaoxiong Yi Xue Ke Xue Za Zhi",
year="1987",
author="Liao, S. C. and Huang, S. T. and Chen, H. S.",
volume="3",
number="3",
pages="199-206",
abstract="<p>[Abstract unavailable]</p><p>Language: zh</p>",
language="zh",
issn="0257-5655",
doi="",
url="http://dx.doi.org/"
}