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Amniocentesis and chorionic villus sampling for prenatal diagnosis (Cochrane Review) ABSTRACT Background: A major disadvantage of second trimester amniocentesis is that the result is usually available only after 18 weeks' gestation. Chorionic villus sampling (CVS) and early amniocentesis can be done between 9 and 14 weeks and offer an earlier alternative . . . |
Full article: The full article is available on Wiley InterScience at http://www.thecochranelibrary.com |