Genetic counseling for the older pregnant woman: new data and questions.
D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D005817:Genetic Counseling; D006801:Humans; D008297:Male; D008423:Maternal Age; D010331:Paternal Age; D011247:Pregnancy