title: [Frequency of chromosome testing in infants born to mothers over the age of 40].
authors.forename: J
authors.initials: J
authors.lastname: Béres
authors.forename: E
authors.initials: E
authors.lastname: Czeizel
mesh_terms: D000328:Adult; D002869:Chromosome Aberrations / Q000175:diagnosis*; D025063:Chromosome Disorders; D000013:Congenital Abnormalities / Q000175:diagnosis; D005260:Female; D006801:Humans; D007621:Karyotyping; D008423:Maternal Age; D011247:Pregnancy; D014463:Ultrasonography
vernacular_title: A 40 éven felüli terhesek magzatjainak kromoszóma-vizsgálati gyakorisága hazánkban.