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First-trimester markers of aneuploidy in women positive for HIV.
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BJOG 2011;118:844-8. -
Screening for fetal aneuploidies at 11 to 13 weeks.
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Prenat Diagn 2011;31:7-15. -
Turning the pyramid of prenatal care.
Nicolaides KH.
Fetal Diagn Ther 2011;29:183-96.