title: Electrophysiological studies in complete heart block.
mesh_terms: D001285:Atropine / Q000627:therapeutic use; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000188:drug therapy / Q000503:physiopathology*; D006801:Humans; D007545:Isoproterenol / Q000627:therapeutic use; D008297:Male
chemical_list: D001285:Atropine; D007545:Isoproterenol