title: Reply: To PMID 23107079.
authors.forename: Kypros H
authors.initials: KH
authors.lastname: Nicolaides
mesh_terms: D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D005820:Genetic Testing / Q000379:methods*; D006801:Humans; D062145:Maternal Serum Screening Tests / Q000379:methods*; D011247:Pregnancy; D011261:Pregnancy Trimester, First / Q000097:blood*; D017422:Sequence Analysis, DNA / Q000379:methods*; D014314:Trisomy / Q000175:diagnosis*