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J Am Med Inform Assoc. 2009 Nov-Dec; 16(6): 897.
PMCID: PMC3002136

Erratum

In Patel et al., Using Semantic and Structural Properties of the Unified Medical Language System to Discover Potential Terminological Relationships, JAMIA 2009, Vol 16 Number 3, May/June 2009, there was a typographical error where a lower case Greek epsilon was omitted from the text on page 349 under the “Scale Analysis” heading.

The text reads

“where degree(C1) = |{C2 ਲ UMLS Concepts: C1 and C2 have a relationship in MRREL}| and k is an arbitrary cut off parameter.”

It should read

“where degree(C1) = |{C2 epsilon UMLS Concepts: C1 and C2 have a relationship in MRREL}| and k is an arbitrary cut off parameter.”

The epsilon in this text indicates that C2 is an element of the set “UMLS CONCEPTS.”


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