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"Structural group-based auditing of missing hierarchical relationships in UMLS."
Yan Chen et al. (2009)
- Yan Chen, Huanying Helen Gu, Yehoshua Perl, James Geller:

Structural group-based auditing of missing hierarchical relationships in UMLS. J. Biomed. Informatics 42(3): 452-467 (2009)

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