Inaccurate estimation of risk in second trimester serum screening for Down syndrome among women who have already had first trimester screening. [electronic resource]
Producer: 20011101Description: 741-6 p. digitalISSN:- 0197-3851
- Adult
- Age Factors
- Biomarkers -- blood
- Down Syndrome -- blood
- Female
- Humans
- Mass Screening -- methods
- Maternal Age
- Neck -- diagnostic imaging
- Pregnancy
- Pregnancy Trimester, First
- Pregnancy Trimester, Second
- Pregnancy, High-Risk
- Reproducibility of Results
- Risk Assessment
- Risk Factors
- Ultrasonography, Prenatal
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Publication Type: Journal Article
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