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Prediction of miscarriage and stillbirth at 11-13 weeks and the contribution of chorionic villus sampling.
Akolekar R, Bower S, Flack N, Bilardo CM, Nicolaides KH.
Prenat Diagn 2011;31:38-45. -
Semiquantitative immunohistochemical localisation of PAPP-A and beta-hCG in first trimester chorionic villi from euploid and trisomic pregnancies.
Sebire NJ, Roberts L, Nicolaides KH.
J Pathol 2000;192:30.