title: [Quantitative determination of morphine in human cerebrospinal fluid by gas chromatography-mass spectrometry (author's transl)].
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006801:Humans; D009020:Morphine / Q000134:cerebrospinal fluid*
chemical_list: D009020:Morphine