“…gas chromatography 4,5 and HPLC. [6][7][8][9] For human urine and serum, these methods require a pretreatment as a solvent extraction and/or lack of sensitivity.…”
“…gas chromatography 4,5 and HPLC. [6][7][8][9] For human urine and serum, these methods require a pretreatment as a solvent extraction and/or lack of sensitivity.…”
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