title: Triple-marker prenatal screening program for chromosomal defects.
authors.affiliation: Department of Obstetrics and Gynecology, Geffen School of Medicine at UCLA, Harbor-UCLA Medical Center, Torrance, California (Ross, Beall).
authors.forename: Michael G
authors.initials: MG
authors.lastname: Ross
authors.forename: Marie H
authors.initials: MH
authors.lastname: Beall
mesh_terms: D002140:California / Q000453:epidemiology; D004314:Down Syndrome / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000208:ethnology; D005260:Female; D006630:Hispanic or Latino; D006801:Humans; D008403:Mass Screening; D011247:Pregnancy; D015995:Prevalence; D016216:Ultrasonography, Prenatal