title: [Esophageal electrocardiography. A study of the changes in the configuration of P-waves registered at the atrioventricular groove].
mesh_terms: D000328:Adult; D000368:Aged; D004562:Electrocardiography / Q000379:methods*; D004566:Electrodes; D004947:Esophagus; D005260:Female; D006321:Heart / Q000033:anatomy & histology; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Esophagus-elektrokardiografi. Et studie af aendringerne i P-tak-konfigurationen registreret ud for den atrie-ventrikulaere overgang.