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First-trimester maternal serum activin A in pre-eclampsia and fetal growth restriction.
Ong CY, Liao AW, Munim S, Spencer K, Nicolaides KH.
J Matern Fetal Neonatal Med 2004;15:176-80. -
Raised maternal serum inhibin A concentration at 10 to 14 weeks of gestation is associated with pre-eclampsia.
Sebire NJ, Roberts L, Noble P, Wallace E, Nicolaides KH.
BJOG 2000;107:795-7.