title: [Observations on the effect of exercise, propranolol and atropine on Q-T interval and QTa under esophageal atrial pacing].
authors.forename: X M
authors.initials: XM
authors.lastname: Chang
mesh_terms: D000293:Adolescent; D000328:Adult; D001285:Atropine / Q000494:pharmacology*; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography / Q000187:drug effects; D004947:Esophagus; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011433:Propranolol / Q000494:pharmacology*
chemical_list: D001285:Atropine; D011433:Propranolol