title: Simultaneous determination of cocaine and benzoylecgonine in urine by gas-liquid chromatography.
mesh_terms: D002849:Chromatography, Gas; D002853:Chromatography, Liquid; D003042:Cocaine / Q000031:analogs & derivatives* / Q000652:urine*; D006801:Humans; D008722:Methods
chemical_list: D003042:Cocaine