Genetic counselling.
D000649:Amniocentesis; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D003376:Counseling; D004314:Down Syndrome / Q000453:epidemiology; D005053:Eugenics; D005260:Female; D005796:Genes; D005799:Genes, Dominant; D005808:Genes, Recessive; D006801:Humans; D006824:Hybridization, Genetic; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D011247:Pregnancy; D012729:Sex Chromosome Aberrations / Q000175:diagnosis; D012730:Sex Chromosomes; D014427:Twins