title: [Certain peculiarities of rheumatic fever in the middle-aged and old patients].
mesh_terms: D000367:Age Factors; D000368:Aged; D001281:Atrial Fibrillation / Q000150:complications; D006801:Humans; D008875:Middle Aged; D009205:Myocarditis / Q000150:complications; D012213:Rheumatic Fever / Q000150:complications / Q000453:epidemiology*
vernacular_title: Nekotorye osobennosti revmatizma u liudeĭ srednego i pozhilogo vozrasta.