title: THE S1, S2, S3 SYNDROME IN CHRONIC PULMONARY DISEASE.
mesh_terms: D006332:Cardiomegaly; D004562:Electrocardiography; D006801:Humans; D010336:Pathology; D011656:Pulmonary Emphysema; D014672:Vectorcardiography
keywords: ELECTROCARDIOGRAPHY; HEART ENLARGEMENT; PATHOLOGY; PULMONARY EMPHYSEMA; VECTORCARDIOGRAPHY