The prevention of rheumatic fever.
D035843:Biomedical Research; D006801:Humans; D011851:Radioactivity; D012213:Rheumatic Fever / Q000517:prevention & control*; D015019:Yttrium; D015021:Yttrium Radioisotopes
D015021:Yttrium Radioisotopes; D015019:Yttrium
RHEUMATIC FEVER/prevention and control; YTTRIUM/radioactive