[Beta-blockaders in the therapy of heart disorders].
D004562:Electrocardiography; D006329:Heart Conduction System / Q000187:drug effects; D006331:Heart Diseases / Q000188:drug therapy*; D006801:Humans; D011433:Propranolol / Q000494:pharmacology / Q000627:therapeutic use*
D011433:Propranolol
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