No abstract available
MeSH terms
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Behavior / physiology
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Education
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Female
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Follow-Up Studies
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Gonadal Steroid Hormones / physiology
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Growth
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Humans
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Intelligence
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Male
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Parent-Child Relations
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Puberty
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Scotland
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Sex Chromosome Aberrations / physiopathology*
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Sex Chromosome Aberrations / psychology
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Skinfold Thickness
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Socioeconomic Factors
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Statistics as Topic
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Twins