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Maternal serum vitamin D at 11-13 weeks in pregnancies delivering small for gestational age neonates.
Ertl R, Yu CK, Samaha R, Akolekar R, Nicolaides KH.
Fetal Diagn Ther 2012;31:103-8. -
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.