Letter: Digoxin and propranolol therapy for angina pectoris.
D000787:Angina Pectoris / Q000188:drug therapy*; D004077:Digoxin / Q000008:administration & dosage / Q000627:therapeutic use*; D004334:Drug Administration Schedule; D006801:Humans; D011433:Propranolol / Q000008:administration & dosage / Q000627:therapeutic use*
D004077:Digoxin; D011433:Propranolol