Article Published: 21 January 2009 Incidence of non-age-dependent chromosomal abnormalities: a population-based study on 88965 amniocenteses Antonino Forabosco, Antonio Percesepe & Sandra Santucci ...

FuturePundit points me to a research paper, Impact of a new national screening policy for Down's syndrome in Denmark: population based cohort study: Results The number of infants born with Down's ...

Most amniocenteses are performed on older mothers, because their children are at higher risk for "trisomies"—often fatal diseases that are caused by having an extra chromosome. But miscarriages ...