Randomised comparison of amniocentesis and transabdominal and cervical chorionic villus sampling: duplicate publication.
Campbell
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S
D000649:Amniocentesis / Q000592:standards*; D015193:Chorionic Villi Sampling / Q000592:standards*; D015713:Duplicate Publications as Topic; D005260:Female; D006801:Humans; D011247:Pregnancy