title: [Duration of action of sustained-release metoprolol in effort angina pectoris].
mesh_terms: D000368:Aged; D000787:Angina Pectoris / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D003692:Delayed-Action Preparations; D004311:Double-Blind Method; D006801:Humans; D008297:Male; D008790:Metoprolol / Q000627:therapeutic use*; D008875:Middle Aged
chemical_list: D003692:Delayed-Action Preparations; D008790:Metoprolol
vernacular_title: Sulla durata d'azione del metoprololo ritardo sull'angina pectoris da sforzo.