No abstract available
MeSH terms
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Adolescent
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Child
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Child, Preschool
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Health Status*
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Health Surveys
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Hearing
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Humans
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Infant
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Lead / blood
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Mental Disorders / epidemiology
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Oral Health
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Physical Examination
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Poverty*
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Skin Diseases / epidemiology
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Social Class
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United States
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Visual Acuity