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Ultrasonography, Prenatal
Ultrasonography
Prenatal Diagnosis
Catheterization
Pregnancy
Gestational Age
Pregnancy, Multiple
Pregnancy Outcomes
Retrospective Studies
Predictive Value of Tests
First Pregnancy Trimester
Prospective Studies
Sensitivity and Specificity
Risk Factors
Newborn Infant
Hypoplastic Left Heart Syndrome
Thyroid Nodule
Fetal Diseases
Pregnancy Complications
Fetal Heart
Co-Publications
72
35
19
18
13
12
11
10
9
8
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