The role of transvaginal sonography in c
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L. W. Popp; G. Ghirardini
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Article
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1990
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John Wiley and Sons
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English
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Vaginosonography has the potential of improving not only accurate diag- nosis preceeding chorionic villus sampling but also the sampling procedure itself. The vaginosonographic diagnostic landmarks of early pregnancies are the contact area between the amnion and the chorion, the insertion of the umb