Sequential pathways of testing after first-trimester screening for trisomy 21. [electronic resource]
Producer: 20041116Description: 661-6 p. digitalISSN:- 0029-7844
- Adult
- Algorithms
- Canada -- epidemiology
- Chorionic Gonadotropin -- blood
- Cohort Studies
- Decision Trees
- Down Syndrome -- blood
- Estradiol -- blood
- False Positive Reactions
- Female
- Humans
- Predictive Value of Tests
- Pregnancy
- Pregnancy Trimester, First
- Pregnancy Trimester, Second
- Prenatal Diagnosis -- methods
- Risk Factors
- Sensitivity and Specificity
- United States -- epidemiology
- alpha-Fetoproteins
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Publication Type: Evaluation Study; Journal Article; Multicenter Study; Research Support, U.S. Gov't, P.H.S.
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