Evolution of a definition of nursing.
D004739:England; D006676:History of Nursing; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009729:Nursing; D009732:Nursing Care; D012649:Self Concept; D012660:Semantics; D014481:United States