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Maternal plasma cell-free fetal and maternal DNA at 11-13 weeks' gestation: relation to fetal and maternal characteristics and pregnancy outcomes.
Poon LC, Musci T, Song K, Syngelaki A, Nicolaides KH.
Fetal Diagn Ther 2013;33:215-23. pdf -
Maternal thyroid function at eleven to thirteen weeks of gestation and subsequent delivery of small for gestational age neonates.
Karagiannis G, Ashoor G, Maiz N, Jawdat F, Nicolaides KH.
Thyroid 2011;21:1127-31.