title: Trisomy 9 screened positive for trisomy 18 by maternal serum screening.
authors.forename: Fady
authors.initials: F
authors.lastname: Khoury-Collado
authors.forename: Virginia M
authors.initials: VM
authors.lastname: Anderson
authors.forename: Bruce R
authors.initials: BR
authors.lastname: Haas
authors.forename: Allan J
authors.initials: AJ
authors.lastname: Fisher
authors.forename: Allan T
authors.initials: AT
authors.lastname: Bombard
authors.forename: Zeev
authors.initials: Z
authors.lastname: Weiner
mesh_terms: D000653:Amniotic Fluid / Q000166:cytology; D015415:Biomarkers / Q000032:analysis*; D002887:Chromosomes, Human, Pair 18; D002899:Chromosomes, Human, Pair 9; D005260:Female; D006801:Humans; D008403:Mass Screening / Q000379:methods; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014314:Trisomy / Q000175:diagnosis* / Q000235:genetics*
chemical_list: D015415:Biomarkers