No abstract available
MeSH terms
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Antibodies / analysis*
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Antistreptolysin / analysis*
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Child
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Child, Preschool
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Humans
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Penicillins / therapeutic use
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Pharyngitis / complications*
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Rheumatic Fever / etiology
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Rheumatic Fever / immunology
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Rheumatic Fever / prevention & control*
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Streptococcal Infections / complications*
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Streptococcal Infections / drug therapy
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Time Factors
Substances
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Antibodies
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Penicillins
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Antistreptolysin