Sudden Infant Death Descriptors can also be linked to a subheading which helps narrow the topic. The MeSH vocabulary is continually updated by subject specialists in various areas . Each year hundreds of new concepts are added and thousands of modifications are made. The UMLS Semantic Network provides a consistent categorization of all concepts represented in the UMLS Metathesaurus and the important relationships between them. It is intended to be a general English lexicon that includes manybiomedical terms.
Coverage includes both commonly occurring English words and biomedical vocabulary.
Source Map has been discontinued. A unique system . No system Uncontrolled vocabularies . McAllister, JC . Institution Duke Univ.