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Improved screening method for beta-blockers in urine using solid-phase extraction and capillary gas chromatography—mass spectrometry

BiochemistrySeparation ScienceMedicineGas ChromatographyBioanalysisMass SpectrometryScreening MethodDrug TestAnalytical ChemistrySolid-phase ExtractionClinical ChemistryLiquid ChromatographyChromatographic AnalysisPharmacologyChromatographyDrug Analysis