title: [Pediatric electrocardiography (sinoatrial block)].
mesh_terms: D002675:Child, Preschool; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis*; D006801:Humans; D008297:Male; D012848:Sinoatrial Block / Q000175:diagnosis*
vernacular_title: Electrocardiografía pediátrica.