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Screening for adverse pregnancy outcome by ductus venosus Doppler at 11-13+6 weeks of gestation.
Maiz N, Valencia C, Emmanuel EE, Staboulidou I, Nicolaides KH.
Obstet Gynecol 2008;112:598-605. -
Distribution of fetal erythroblasts in maternal blood after chorionic villous sampling.
Al-Mufti R, Hambley H, Farzaneh F, Nicolaides KH.
BJOG 2003;110:33-8.