DOI: 10.1097/01.ruq.0000335209.90336.7a
,
Issn Print: 0894-8771
Publication Date: 2008/12/01
Reliability of Transvaginal Ultrasonography at 7 to 9 Weeks Gestation in the Determination of Chorionicity and Amnionicity in Twin Pregnancies
Carolyn M. Sofka
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