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Low serum testosterone assayed by liquid chromatography-tandem mass spectrometry. Comparison with five immunoassay techniques

AndrologyUrologyBioanalysisMass SpectrometryLow Serum TestosteroneGynecologyAnalytical ChemistryReproductive HormoneClinical ChemistryEndocrinologyMedicineEndocrine ResearchSteroid MetabolismChromatographyImmunoassay Techniques