title: [The QRS loop recording in healthy subjects obtained with an esophageal electrode].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004566:Electrodes; D004947:Esophagus; D005260:Female; D006321:Heart / Q000502:physiology; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D014672:Vectorcardiography / Q000295:instrumentation*
vernacular_title: Zapis petli QRS z zastosowaniem elektrody przełykowej u osób bez zmian w układzie krazenia.