The origin of numerical chromosome abnormalities.
D000022:Abortion, Spontaneous; D000328:Adult; D000782:Aneuploidy; D002869:Chromosome Aberrations / Q000453:epidemiology / Q000235:genetics*; D025063:Chromosome Disorders; D002877:Chromosomes, Human; D004314:Down Syndrome / Q000453:epidemiology; D005260:Female; D005313:Fetal Death; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D010331:Paternal Age; D011003:Ploidies; D011247:Pregnancy; D012729:Sex Chromosome Aberrations / Q000453:epidemiology / Q000235:genetics*; D014314:Trisomy