No abstract available
MeSH terms
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Adolescent
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Arthritis, Rheumatoid
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Child
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Child, Preschool
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Electrocardiography
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Female
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Heart Auscultation
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Humans
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Male
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Nutritional Physiological Phenomena
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Pakistan
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Rheumatic Fever / epidemiology*
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Rheumatic Heart Disease
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Streptococcal Infections / epidemiology