<?xml version="1.0"?>
<dblp>
<article key="journals/jbi/ChenGPG09" mdate="2009-09-25">
<author>Yan Chen</author>
<author>Huanying Helen Gu</author>
<author>Yehoshua Perl</author>
<author>James Geller</author>
<title>Structural group-based auditing of missing hierarchical relationships in UMLS.</title>
<pages>452-467</pages>
<year>2009</year>
<volume>42</volume>
<journal>Journal of Biomedical Informatics</journal>
<number>3</number>
<ee>http://dx.doi.org/10.1016/j.jbi.2008.08.006</ee>
<url>db/journals/jbi/jbi42.html#ChenGPG09</url>
</article>
</dblp>
