Prenatal diagnosis and multiple gestation.
D000028:Abortion, Induced; D000328:Adult; D002869:Chromosome Aberrations / Q000175:diagnosis* / Q000235:genetics; D025063:Chromosome Disorders; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011296:Prenatal Diagnosis