-
Placental mRNA expression of alpha and beta human chorionic gonadotrophin in early trisomy 18 pregnancies.
Brizot ML, Jauniaux E, Mckie AT, Farzaneh F, Nicolaides KH.
Mol Hum Reprod 1996;2:463-5. -
Cardiac defects in 1st-trimester fetuses with trisomy 18.
Hyett JA, Moscoso G, Nicolaides KH.
Fetal Diagn Ther 1995;10:381-6.