title: Chromosome studies on 11,000 newborn infants.
mesh_terms: D002869:Chromosome Aberrations / Q000453:epidemiology*; D025063:Chromosome Disorders; D004314:Down Syndrome / Q000453:epidemiology; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007621:Karyotyping; D007713:Klinefelter Syndrome / Q000453:epidemiology; D008297:Male; D008403:Mass Screening; D014314:Trisomy