Content analysis: reliability and validity.
University of Texas School of Nursing, Galveston.
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RP
Lederman
D000043:Abstracting and Indexing / Q000592:standards*; D006801:Humans; D015399:Nursing Research / Q000379:methods / Q000592:standards*; D015588:Observer Variation; D015203:Reproducibility of Results; D012660:Semantics