No abstract available
MeSH terms
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Child Behavior Disorders / diagnosis
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Child Behavior Disorders / epidemiology*
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Child, Preschool
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Cognition
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Encopresis / epidemiology
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Enuresis / epidemiology
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Fear
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Female
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Humans
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Hyperkinesis / epidemiology
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Interview, Psychological
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London
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Male
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Psychological Tests
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Reaction Time
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Sampling Studies
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Sex Factors
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Social Class