Simultaneous determination of Tramadol, O-Desmethyltramadol and N-Desmethyltramadol in human urine by gas chromatography-mass spectrometry Research Authors M Mohamed, AAY El-Sayed, AY Nasser, J Button, DW Holt Research Date Mon, 1 Aug 2011 - 12:00 Research Department Department of Biochemistry Research Journal THERAPEUTIC DRUG MONITORING Research Member Ahmed Yassin Ahmed Research Year 2011
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