title: [Studies of ostium secundum type of atrial septal defect with left axis deviation (author's transl)].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D008297:Male; D014672:Vectorcardiography