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First-trimester contingent screening for trisomy 21 by biomarkers and maternal blood cell-free DNA testing.
Nicolaides KH, Wright D, Poon LC, Syngelaki A, Gil MM.
Ultrasound Obstet Gynecol 2013;42:41-50. pdf -
First-trimester contingent screening for trisomies 21, 18 and 13 by biomarkers and maternal blood cell-free DNA testing.
Nicolaides KH, Syngelaki A, Poon LC, Gil M, Wright D.
Fetal Diagn Ther 2014;35:185-92. pdf -
First-trimester screening for neural tube defects using alpha-fetoprotein.
Bredaki FE, Poon LC, Birdir C, Escalante D, Nicolaides KH.
Fetal Diagn Ther 2012;31:109-14. -
Maternal serum alpha-fetoprotein in fetal neural tube and abdominal wall defects at 10-14 weeks of gestation.
Sebire NJ, Spencer K, Noble PL, Hughes K, Nicolaides KH.
BJOG 1997;104:849-51.