title: When are we allowed to use a marker in Down syndrome screening?
authors.forename: A
authors.initials: A
authors.lastname: Farina
authors.forename: N
authors.initials: N
authors.lastname: Rizzo
authors.forename: P
authors.initials: P
authors.lastname: Carinci
authors.forename: L
authors.initials: L
authors.lastname: Bovicelli
mesh_terms: D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D005819:Genetic Markers; D005820:Genetic Testing; D006801:Humans; D015233:Models, Statistical; D011247:Pregnancy
chemical_list: D005819:Genetic Markers