title: First-trimester screening for Down's syndrome in in vitro fertilization pregnancies.
authors.forename: M
authors.initials: M
authors.lastname: Niemimaa
authors.forename: S
authors.initials: S
authors.lastname: Heinonen
authors.forename: M
authors.initials: M
authors.lastname: Seppälä
authors.forename: M
authors.initials: M
authors.lastname: Hippeläinen
authors.forename: H
authors.initials: H
authors.lastname: Martikainen
authors.forename: M
authors.initials: M
authors.lastname: Ryynänen
mesh_terms: D000328:Adult; D001798:Blood Proteins / Q000032:analysis; D006063:Chorionic Gonadotropin / Q000097:blood; D004314:Down Syndrome / Q000175:diagnosis*; D005189:False Positive Reactions; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D018566:Pregnancy, High-Risk; D011296:Prenatal Diagnosis / Q000379:methods*
chemical_list: D001798:Blood Proteins; D006063:Chorionic Gonadotropin