Chorion villus sampling: valuable addition or dangerous alternative?
D000028:Abortion, Induced; D000649:Amniocentesis / Q000009:adverse effects / Q000592:standards; D015193:Chorionic Villi Sampling / Q000009:adverse effects* / Q000592:standards; D002986:Clinical Trials as Topic; D000013:Congenital Abnormalities / Q000209:etiology; D005260:Female; D006801:Humans; D011247:Pregnancy; D011256:Pregnancy Outcome; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D012307:Risk Factors