title: The impact of prenatal diagnosis on the incidence of Down syndrome in Denmark.
authors: M
authors: M
authors: Mikkelsen
mesh_terms: D000328:Adult; D003718:Denmark / Q000453:epidemiology; D004314:Down Syndrome / Q000175:diagnosis* / Q000453:epidemiology; D005260:Female; D006801:Humans; D015994:Incidence; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D011159:Population Surveillance; D011296:Prenatal Diagnosis / Q000379:methods / Q000592:standards* / Q000706:statistics & numerical data; D012042:Registries; D012744:Sex Ratio