Differences between rates of trisomy 21 (Down syndrome) and other chromosomal abnormalities diagnosed in livebirths and in cells cultured after second-trimester amniocentesis--suggested explanations and implications for genetic counseling and program planning.
D000328:Adult; D000649:Amniocentesis; D002869:Chromosome Aberrations / Q000175:diagnosis*; D025063:Chromosome Disorders; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D005313:Fetal Death; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000175:diagnosis*; D008423:Maternal Age; D008875:Middle Aged; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D012189:Retrospective Studies; D013223:Statistics as Topic