title: Triangulation: operational definitions.
authors.affiliation: Columbus Children's Hospital, OH.
authors.forename: J
authors.initials: J
authors.lastname: Kimchi
authors.forename: B
authors.initials: B
authors.lastname: Polivka
authors.forename: J S
authors.initials: JS
authors.lastname: Stevenson
mesh_terms: D003625:Data Collection / Q000379:methods* / Q000592:standards; D003627:Data Interpretation, Statistical; D006801:Humans; D015399:Nursing Research / Q000379:methods* / Q000592:standards; D015588:Observer Variation; D013997:Time Factors