title: Markers for Down's syndrome in early pregnancy.
authors.affiliation: Department of Obstetrics and Gynaecology, Academic Medical Centre, Amsterdam, The Netherlands.
authors.forename: J M
authors.initials: JM
authors.lastname: Van Lith
mesh_terms: D015415:Biomarkers / Q000097:blood*; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011266:Pregnancy-Associated Plasma Protein-A / Q000032:analysis; D011296:Prenatal Diagnosis / Q000379:methods*; D016216:Ultrasonography, Prenatal
chemical_list: D015415:Biomarkers; D018997:Chorionic Gonadotropin, beta Subunit, Human; D011266:Pregnancy-Associated Plasma Protein-A