title: Significance of a false-positive trisomy 18 multiple-marker screening test.
authors.forename: J
authors.initials: J
authors.lastname: Yankowitz
mesh_terms: D015982:Bias; D002887:Chromosomes, Human, Pair 18; D005189:False Positive Reactions; D005260:Female; D005819:Genetic Markers; D005820:Genetic Testing; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D011256:Pregnancy Outcome; D012107:Research Design; D012680:Sensitivity and Specificity; D014314:Trisomy; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D005819:Genetic Markers; D000509:alpha-Fetoproteins