[The value of electrocardiographic P-wave in the diagnosis of left atrial enlargement (author's transl)].
D000293:Adolescent; D000328:Adult; D006332:Cardiomegaly / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D004452:Echocardiography; D004562:Electrocardiography; D006801:Humans