title: [Circumstances for the cytogenetic diagnosis of trisomy 21].
authors.forename: V
authors.initials: V
authors.lastname: Layet
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D004314:Down Syndrome / Q000235:genetics*; D006801:Humans; D007231:Infant, Newborn; D007621:Karyotyping; D011296:Prenatal Diagnosis
vernacular_title: Circonstances de diagnostic cytogénétique de la trisomie 21.