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Identifying twin gestations at low risk for preterm birth with a transvaginal ultrasonographic cervical measurement at 24 to 26 weeks' gestation

Obstetric ImagingInfertilityTwin GestationsMiscarriage TestingLow RiskPediatricsGynecologyMaternal HealthGestational AgePreterm BirthPrenatal DiagnosisPublic HealthCervical RipeningMedicinePrenatal Testing