[SOME PROBLEMS IN RHEUMATISM EPIDEMIOLOGY].
D004813:Epidemiology; D006801:Humans; D012216:Rheumatic Diseases; D012213:Rheumatic Fever; D014455:Ukraine
EPIDEMIOLOGY; RHEUMATIC FEVER; RHEUMATISM; UKRAINE
NEKOROTYE VOPROSY 'EPIDEMIOLOGII REVMATIZMA.