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First trimester maternal serum free beta human chorionic gonadotrophin and pregnancy associated plasma protein A as predictors of pregnancy complications.
Ong CY, Liao AW, Spencer K, Munim S, Nicolaides KH.
BJOG 2000;107:1265-70. -
Fetal cells in maternal blood of pregnancies with severe fetal growth restriction.
Al-Mufti R, Lees C, Albaiges G, Hambley H, Nicolaides KH.
Hum Reprod 2000;15:218-21.