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Changes in the Gestational Age Distribution among U.S. Singleton Births: Impact on Rates of Late Preterm Birth, 1992 to 2002

Gestational Age DistributionLate Preterm BirthPreterm LaborReproductive HealthPediatricsGestational AgeGynecologyPregnancyMaternal HealthU.s. Singleton BirthsPrematurityPreterm BirthDemographyPublic HealthMedicineReproductive EpidemiologyBirth Outcomes