Selective birth in twin pregnancy with discordancy for Down's syndrome.
D000028:Abortion, Induced / Q000379:methods*; D000649:Amniocentesis; D004200:Diseases in Twins; D004314:Down Syndrome; D005260:Female; D005313:Fetal Death; D005817:Genetic Counseling; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D014463:Ultrasonography