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Screening for fetal aneuploidies at 11 to 13 weeks.
Nicolaides KH.
Prenat Diagn 2011;31:7-15. -
Maternal serum alpha-fetoprotein in normal pregnancy at 11-13 weeks' gestation.
Bredaki FE, Wright D, Akolekar R, Cruz G, Nicolaides KH.
Fetal Diagn Ther 2011;30:274-9. -
Maternal thyroid function at 11-13 weeks of gestation in fetal trisomies 21 and 18.
Ashoor G, Maiz N, Cuckle H, Jawdat F, Nicolaides KH.
Prenat Diagn 2011;31:33-7.