title: Electrophysiological studies in the syndrome of a short P-R interval and normal QRS complex.
mesh_terms: D000328:Adult; D002648:Child; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D013577:Syndrome; D013614:Tachycardia, Paroxysmal / Q000503:physiopathology*