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Maternal serum activin-A at 30-33 weeks in the prediction of preeclampsia.
Lai J, Pinas A, Syngelaki A, Poon LC, Nicolaides KH.
J Matern Fetal Neonatal Med 2013;26:733-7. -
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.