title: A comparison of the relative value of noninvasive techniques--echocardiography, systolic time intervals, and apexcardiography--in the diagnosis of primary myocardial disease.
mesh_terms: D000293:Adolescent; D000328:Adult; D006328:Cardiac Catheterization; D002302:Cardiac Output; D009202:Cardiomyopathies / Q000175:diagnosis* / Q000503:physiopathology; D004452:Echocardiography; D005260:Female; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D007702:Kinetocardiography; D008297:Male; D008722:Methods; D008875:Middle Aged; D010701:Phonocardiography