Experience with a silver cannula for transcervical chorion villus sampling.
D001707:Biopsy, Needle / Q000009:adverse effects / Q000295:instrumentation; D002404:Catheterization / Q000009:adverse effects / Q000295:instrumentation*; D002824:Chorionic Villi / Q000473:pathology*; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000295:instrumentation*