title: Determination of metoprolol in plasma and urine by gas-liquid chromatography with electron-capture detection.
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D006801:Humans; D008790:Metoprolol / Q000097:blood* / Q000302:isolation & purification / Q000652:urine; D011412:Propanolamines / Q000097:blood*
chemical_list: D011412:Propanolamines; D008790:Metoprolol