title: Effect of nifedipine alone versus in combination with beta blockers and/or nitrates on left ventricular function in angina pectoris.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000008:administration & dosage*; D000787:Angina Pectoris / Q000188:drug therapy*; D006801:Humans; D009543:Nifedipine / Q000008:administration & dosage*; D009566:Nitrates / Q000008:administration & dosage*
chemical_list: D000319:Adrenergic beta-Antagonists; D009566:Nitrates; D009543:Nifedipine