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Pregnancy
Birth Weight
Gestational Age
Pregnancy, Multiple
Newborn Infant
Twins
African Americans
Risk Factors
Pregnancy Outcomes
Retrospective Studies
Caesarean Section
Parity
Cohort Studies
Baltimore
Pregnancy Complications
Weight Gain
Fetal Growth Retardation
Pre-Eclampsia
Premature Obstetric Labor
Fetal Blood
Co-Publications
16
14
12
10
9
8
7
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