Chorionic villi sampling using rigid forceps under ultrasound control.
D000022:Abortion, Spontaneous / Q000209:etiology; D001706:Biopsy / Q000009:adverse effects / Q000295:instrumentation; D002824:Chorionic Villi / Q000473:pathology*; D002869:Chromosome Aberrations; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000295:instrumentation*; D013525:Surgical Instruments; D014465:Ultrasonics