title: Calcium blockers and beta blockers: alone and in combination.
mesh_terms: D000787:Angina Pectoris / Q000188:drug therapy; D002986:Clinical Trials as Topic; D003327:Coronary Disease / Q000188:drug therapy*; D004359:Drug Therapy, Combination; D004562:Electrocardiography; D005080:Exercise Test; D006339:Heart Rate / Q000187:drug effects; D006352:Heart Ventricles / Q000187:drug effects; D006801:Humans; D010919:Placebos; D011433:Propranolol / Q000627:therapeutic use*; D014700:Verapamil / Q000627:therapeutic use*
chemical_list: D010919:Placebos; D011433:Propranolol; D014700:Verapamil