[Clinical evaluation of high frequency components in the QRS complexes in the orthogonal electrocardiogram by the Frank system].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002037:Bundle-Branch Block / Q000175:diagnosis; D002312:Cardiomyopathy, Hypertrophic / Q000175:diagnosis; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis