title: [Trisomy 21, after a half century].
authors.affiliation: jynau@orange.fr
authors.forename: Jean-Yves
authors.initials: JY
authors.lastname: Nau
mesh_terms: D000649:Amniocentesis; D003657:Decision Making; D004314:Down Syndrome / Q000175:diagnosis* / Q000235:genetics / Q000266:history; D005260:Female; D005602:France; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D048208:Nuchal Translucency Measurement; D010353:Patient Education as Topic; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000266:history / Q000379:methods*; D016216:Ultrasonography, Prenatal / Q000379:methods