title: A review of trisomies 21, 18, and 13.
mesh_terms: D002901:Chromosomes, Human, 13-15; D002902:Chromosomes, Human, 16-18; D004314:Down Syndrome / Q000150:complications; D005817:Genetic Counseling; D006801:Humans; D014314:Trisomy; D014342:Truth Disclosure