title: Variability in MSAFP predicted rates of Down syndrome.
authors: J N
authors: JN
authors: Macri
authors: D A
authors: DA
authors: Krantz
authors: E J
authors: EJ
authors: Cook
authors: K
authors: K
authors: Sorensen
authors: R V
authors: RV
authors: Kasturi
mesh_terms: D000328:Adult; D004314:Down Syndrome / Q000453:epidemiology* / Q000235:genetics; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008403:Mass Screening; D008423:Maternal Age; D011237:Predictive Value of Tests; D011247:Pregnancy; D018566:Pregnancy, High-Risk; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D000509:alpha-Fetoproteins