Medical Subject Headings (MeSH).
Lipscomb
C E
CE
D049673:History, 20th Century; D008523:MEDLARS / Q000266:history*; D016239:MEDLINE; D009317:National Library of Medicine (U.S.) / Q000266:history*; D013358:Subject Headings; D017432:Unified Medical Language System; D014481:United States