MammographyCancer Care FacilitiesBreast NeoplasmsMass ScreeningVulnerable PopulationsFalse Positive ReactionsSensitivity and SpecificityEarly Detection of CancerX-Ray FilmBreastBreast Self-ExaminationRadiologyRadiographic Image Interpretation, Computer-AssistedPalpationBreast DiseasesDiagnostic ErrorsReproducibility of ResultsUnited StatesDiagnostic ImagingPatient Acceptance of Health CareDiagnostic Tests, RoutinePredictive Value of TestsCarcinoma, Intraductal, NoninfiltratingHealth Knowledge, Attitudes, PracticeROC CurveRetrospective StudiesObserver VariationBiopsyEducational MeasurementPatient ComplianceDiagnostic Techniques and ProceduresNew HampshireProspective StudiesMagnetic Resonance ImagingX-Ray Intensifying ScreensQuestionnairesLogistic ModelsAge FactorsRadiation DosageHealth Services AccessibilityPhysical ExaminationWomen's HealthMobile Health UnitsRisk FactorsCarcinoma, Ductal, Breast