(Q45997913)
Statements
1 reference
Rates of Down syndrome at livebirth by one-year maternal age intervals in studies with apparent close to complete ascertainment in populations of European origin: a proposed revised rate schedule for use in genetic and prenatal screening. (English)
1 reference
Hecht CA
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Hook EB
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1 April 1996
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62
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4
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376-385
1 reference