title: Mapping in PubMed.
authors.forename: Lou Wave S
authors.initials: LS
authors.lastname: Knecht
authors.forename: Stuart J
authors.initials: SJ
authors.lastname: Nelson
mesh_terms: D006801:Humans; D016247:Information Storage and Retrieval / Q000592:standards*; D007802:Language; D016239:MEDLINE / Q000592:standards*; D013358:Subject Headings