No abstract available
MeSH terms
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Adolescent
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Biopsy
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Child
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Child, Preschool
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Diseases in Twins
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Humans
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Infant
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Infant, Newborn
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Klinefelter Syndrome / blood
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Klinefelter Syndrome / diagnosis*
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Male
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Psychosexual Development*
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Puberty
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Sex Characteristics
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Testis / pathology
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Testosterone / blood