(Q39820774)
Statements
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Estimated rates of Down syndrome in live births by one year maternal age intervals for mothers aged 20-49 in a New York State study-implications of the risk figures for genetic counseling and cost-benefit analysis of prenatal diagnosis programs (English)
Hook EB
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Chambers GM
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1 January 1977
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13
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3A
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123-141
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Identifiers
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