Nursing unification in principal teaching hospitals.
D000046:Academic Medical Centers / Q000458:organization & administration; D004506:Education, Nursing / Q000639:trends*; D006784:Hospitals, Teaching / Q000458:organization & administration*; D008962:Models, Theoretical; D009738:Nursing Service, Hospital / Q000458:organization & administration*; D009935:Organizational Affiliation; D012106:Research; D012579:Schools, Nursing / Q000458:organization & administration*; D013663:Teaching; D014481:United States