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Pregnancy
Gestational Age
Pregnancy Outcomes
Retrospective Studies
Risk Factors
Logistic Models
Predictive Value of Tests
Risk Assessment
Sensitivity and Specificity
Low Birth Weight Infant
Infant Mortality
Newborn Infant
Premature Obstetric Labor
Fetal Growth Retardation
Newborn Respiratory Distress Syndrome
Ultrasonography, Prenatal
Prenatal Diagnosis
Pennsylvania
Intensive Care Units, Neonatal
Aneuploidy
Co-Publications
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