[Nursing development in the United States. Multiplicity of nursing specialties and assignment systems for staff nurses].
Takahashi
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D006801:Humans; D009741:Nursing Staff, Hospital / Q000600:supply & distribution*; D010559:Personnel Management; D010561:Personnel Staffing and Scheduling; D013041:Specialties, Nursing / Q000639:trends*; D014481:United States