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Clinical significance of first-trimester chorionic bumps: a matched case-control study.
Sana Y, Appiah A, Davison A, Nicolaides KH, Johns J, Ross JA.
Ultrasound Obstet Gynecol 2013;42:585-9. -
Midbrain and falx in fetuses with absent corpus callosum at 11-13 weeks.
Lachmann R, Sodre D, Barmpas M, Akolekar R, Nicolaides KH.
Fetal Diagn Ther 2013;33:41-6.