title: [Electrocardiographic and polycardiographic studies in scleroderma].
mesh_terms: D000328:Adult; D004562:Electrocardiography; D005260:Female; D006331:Heart Diseases / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010701:Phonocardiography; D012595:Scleroderma, Systemic / Q000175:diagnosis*
vernacular_title: Badania elektrokardiograficzne i polikardiograficzne w twardzinie