Fetal nuchal translucency: just a sonographic image or a real anatomical structure?
D005260:Female; D005333:Fetus / Q000166:cytology*; D006801:Humans; D009333:Neck / Q000000981:diagnostic imaging*; D015588:Observer Variation; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D015203:Reproducibility of Results; D016216:Ultrasonography, Prenatal