title: Second-trimester diagnosis of trisomy 9 associated with abnormal maternal serum screening results.
authors.forename: M H
authors.initials: MH
authors.lastname: Quigg
authors.forename: S
authors.initials: S
authors.lastname: Diment
authors.forename: J
authors.initials: J
authors.lastname: Roberson
mesh_terms: D000015:Abnormalities, Multiple / Q000000981:diagnostic imaging; D000328:Adult; D002899:Chromosomes, Human, Pair 9 / Q000235:genetics*; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011266:Pregnancy-Associated Plasma Protein-A / Q000032:analysis*; D011296:Prenatal Diagnosis; D014314:Trisomy / Q000175:diagnosis*; D014463:Ultrasonography
chemical_list: D011266:Pregnancy-Associated Plasma Protein-A