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The impact of prenatal care in the United States on preterm births in the presence and absence of antenatal high-risk conditions

Perinatal HealthAntenatal High-risk ConditionsPreterm LaborMedicineMaternal ComplicationPediatricsGynecologyPregnancyMaternal HealthPreterm BirthPrenatal CarePrematurityPublic HealthUnited StatesPerinatal EpidemiologyWomen's HealthHigh-risk Pregnancy