title: Maternal serum screening for Down's syndrome in the first trimester of pregnancy.
authors.affiliation: Department of Obstetrics and Gynaecology, University of Florence, Italy.
authors.forename: R
authors.initials: R
authors.lastname: Biagiotti
authors.forename: E
authors.initials: E
authors.lastname: Cariati
authors.forename: L
authors.initials: L
authors.lastname: Brizzi
authors.forename: A
authors.initials: A
authors.lastname: D'Agata
mesh_terms: D000293:Adolescent; D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood*; D004314:Down Syndrome / Q000175:diagnosis*; D004958:Estradiol / Q000097:blood*; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008423:Maternal Age; D008875:Middle Aged; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000379:methods*; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D006063:Chorionic Gonadotropin; D000509:alpha-Fetoproteins; D004958:Estradiol