[On prevention of rheumatic fever and rheumatic heart valve defects].
D035843:Biomedical Research; D006351:Heart Valves; D006801:Humans; D010406:Penicillins / Q000628:therapy*; D012213:Rheumatic Fever; D012214:Rheumatic Heart Disease / Q000517:prevention & control*; D013290:Streptococcal Infections / Q000628:therapy*
D010406:Penicillins
PENICILLIN/therapy; RHEUMATIC HEART DISEASE/prevention and control; STREPTOCOCCAL INFECTIONS/therapy