title: [OBSERVATIONS ON RHEUMATIC FEVER IN CHILDREN UNDER 7 YEARS OF AGE].
mesh_terms: D001699:Biometry; D002648:Child; D006801:Humans; D007223:Infant; D011044:Poland; D012213:Rheumatic Fever; D013223:Statistics as Topic
keywords: CHILD; INFANT; POLAND; RHEUMATIC FEVER; STATISTICS
vernacular_title: UWAGI DOTYCZ ACE CHOROBY REUMATYCZNEJ U DZIECI DO 7 ROKU ZYCIA.