title: A trend toward increased first trimester free beta-hCG and PAPP-A in monochorionic twins complicated by Twin-to-Twin Transfusion syndrome.
authors: I H
authors: IH
authors: Linskens
authors: M
authors: M
authors: Engels
authors: D
authors: D
authors: Oepkes
authors: A C
authors: AC
authors: Heijboer
authors: M A
authors: MA
authors: Blankenstein
authors: J M G
authors: JM
authors: van Vugt
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000097:blood; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood*; D005260:Female; D005330:Fetofetal Transfusion / Q000097:blood* / Q000175:diagnosis; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First / Q000097:blood*; D011266:Pregnancy-Associated Plasma Protein-A / Q000032:analysis*; D011296:Prenatal Diagnosis / Q000379:methods*; D055815:Young Adult
chemical_list: D015415:Biomarkers; D018997:Chorionic Gonadotropin, beta Subunit, Human; D011266:Pregnancy-Associated Plasma Protein-A