Consistent and variable chromosome anomalies in parents of children with Down's syndrome.
D000328:Adult; D000782:Aneuploidy; D002842:Chromatids; D002869:Chromosome Aberrations; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D008423:Maternal Age; D013223:Statistics as Topic