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Frontomaxillary facial angle in fetuses with spina bifida at 11-13 weeks.
Lachmann R, Picciarelli G, Moratalla J, Green N, Nicolaides KH.
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Fetal heart rate at 10-14 weeks and birthweight.
Sebire NJ, Nayar R, Carvalho M, Soares W, Nicolaides KH.
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