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Pregnancy
Gestational Age
Organ Size
Ultrasonography, Prenatal
Cordocentesis
Prenatal Diagnosis
Echocardiography, Four-Dimensional
Prospective Studies
Reference Values
Second Pregnancy Trimester
Cross-Sectional Studies
Blood Flow Velocity
Nomograms
Predictive Value of Tests
Thailand
alpha-Thalassemia
Hydrops Fetalis
Fetal Diseases
Fetuses
Hemoglobins, Abnormal
Co-Publications
34
20
16
14
13
3
2
1
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