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Prediction of small-for-gestation neonates from biophysical and biochemical markers at 11-13 weeks.
Karagiannis G, Akolekar R, Sarquis R, Wright D, Nicolaides KH.
Fetal Diagn Ther 2011;29:148-54. -
First-trimester maternal serum PAPP-A, SP1 and M-CSF levels in normal and trisomic twin pregnancies.
Bersinger NA, Noble P, Nicolaides KH.
Prenat Diagn 2003;23:157-62.