title: ECG of the month. Alien intruders. Ventricular parasystole.
authors.affiliation: Dept of Medicine, Texas Tech University Health Sciences Center, El Paso, USA.
authors.forename: J I
authors.initials: JI
authors.lastname: Martinez-Lopez
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005260:Female; D006352:Heart Ventricles; D006801:Humans; D017574:Parasystole / Q000175:diagnosis*