title: THE HEART IN PROGRESSIVE SYSTEMIC SCLEROSIS.
mesh_terms: D004562:Electrocardiography; D006321:Heart; D006331:Heart Diseases; D006801:Humans; D045743:Scleroderma, Diffuse; D012595:Scleroderma, Systemic; D012598:Sclerosis
keywords: ELECTROCARDIOGRAPHY; HEART DISEASES; SCLEROSIS