THE NORMAL AND ABNORMAL APEXCARDIOGRAM. ITS PHYSIOLOGIC VARIATION AND ITS RELATION TO INTRACARDIAC EVENTS.
D004562:Electrocardiography; D006321:Heart; D006331:Heart Diseases; D006334:Heart Function Tests; D006801:Humans; D010701:Phonocardiography
ELECTROCARDIOGRAPHY; HEART DISEASES; HEART FUNCTION TESTS; PHONOCARDIOGRAPHY; REVIEW