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Pregnancy
Gestational Age
Newborn Infant
European Continental Ancestry Group
Triplets
Small for Gestational Age Infant
United States
Retrospective Studies
Risk Factors
Infant Mortality
Maternal Age
Cohort Studies
Pregnancy Outcomes
Stillbirth
Prevalence
Odds Ratio
Logistic Models
Population Surveillance
Prenatal Care
Premature Birth
Co-Publications
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