Research Article
[Retracted] The Diagnostic Accuracy of Transabdominal and Transvaginal Color Doppler Ultrasound for Pregnant Women with Vasa Previa and Velamentous Cord Insertion
Table 2
Positive and negative likelihood ratios (LR+ and LR-) of TA-CDUS examination in determining VP combined with VCI taking gross examination as the gold standard.
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