title: [Heart defects in middle-aged and old persons].
mesh_terms: D000367:Age Factors; D000368:Aged; D001161:Arteriosclerosis / Q000175:diagnosis; D003937:Diagnosis, Differential; D006326:Heart Auscultation; D006334:Heart Function Tests; D006349:Heart Valve Diseases / Q000175:diagnosis / Q000453:epidemiology; D006351:Heart Valves / Q000473:pathology; D006801:Humans; D008875:Middle Aged; D012214:Rheumatic Heart Disease / Q000175:diagnosis / Q000453:epidemiology
vernacular_title: Poroki serdtsa u liudeĭ pozhilogo i starcheskogo vozrasta