title: The effect of gestational age on maternal serum alpha-fetoprotein levels in pregnancies with Down syndrome.
authors.forename: H S
authors.initials: HS
authors.lastname: Cuckle
mesh_terms: D004314:Down Syndrome / Q000196:embryology*; D005260:Female; D005315:Fetal Diseases; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy / Q000097:blood*; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D000509:alpha-Fetoproteins