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Tags: 2009, Alpha-fetoprotein, association, birth, Brace M, Bracero L A, Calhoun B C, down-syndrome, Environmental & Occupational Health, Hatjis C G, human chorionic-gonadotropin, intrauterine growth restriction, Journal Article or Conference Abstract Publication, Journal of Medical Screening, Lao M R, markers, maternal, Preeclampsia, Pregnancy, Public, serum inhibin, Seybold D J, Wang Y
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