title: Can Prenatal Testing in the First Trimester be Performed without Ultrasound?
authors.forename: E
authors.initials: E
authors.lastname: Merz
mesh_terms: D005260:Female; D006801:Humans; D048208:Nuchal Translucency Measurement; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis; D016216:Ultrasonography, Prenatal