title: Recurrence risks for chromosome abnormalities.
mesh_terms: D002869:Chromosome Aberrations / Q000453:epidemiology / Q000235:genetics*; D025063:Chromosome Disorders; D005260:Female; D005817:Genetic Counseling; D006801:Humans; D008297:Male; D008423:Maternal Age; D012306:Risk; D014314:Trisomy