Abstract
Background Screening of maternal serum to identify fetuses with Down's syndrome is now routinely offered during the second trimester of pregnancy. Prenatal screening by means of serum assays or ult...
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CITATION STYLE
APA
Haddow, J. E., Palomaki, G. E., Knight, G. J., Williams, J., Miller, W. A., & Johnson, A. (1998). Screening of Maternal Serum for Fetal Down’s Syndrome in the First Trimester. New England Journal of Medicine, 338(14), 955–962. https://doi.org/10.1056/nejm199804023381404
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