title: Comparative, observational designs: case-control and cohort studies.
authors.forename: J D
authors.initials: JD
authors.lastname: Whitney
mesh_terms: D016022:Case-Control Studies; D015400:Clinical Nursing Research / Q000379:methods*; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D016021:Epidemiologic Studies; D006801:Humans