title: Additional studies warranted to confirm monosomy 21.
authors.forename: Mary C
authors.initials: MC
authors.lastname: Phelan
mesh_terms: D015193:Chorionic Villi Sampling; D002891:Chromosomes, Human, Pair 21; D005260:Female; D006801:Humans; D009006:Monosomy; D011247:Pregnancy; D011296:Prenatal Diagnosis