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1 Effective Query Expansion using Condensed UMLS Metathesaurus for Medical Information Retrieval
Seung Bin Han, Jinwook Choi
J Korean Soc Med Inform.2004;10(1):43-53.   Published online 2004 March 31     DOI: http://dx.doi.org/10.4258/jksmi.2004.10.1.43
   

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