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Maternal serum placental growth factor isoforms 1 and 2 at 11-13, 20-24 and 30-34 weeks' gestation in late-onset pre-eclampsia and small for gestational age neonates.
Nucci M, Poon LC, Demirdjian G, Darbouret B, Nicolaides KH.
Fetal Diagn Ther 2014;35:249-57. pdf -
Assessment of umbilical arterial and venous flow using color Doppler.
Lees C, Albaiges G, Deane C, Parra M, Nicolaides KH.
Ultrasound Obstet Gynecol 1999;14:250-5.