Labor Stage, FirstLabor Stage, ThirdLabor Stage, SecondLabor, ObstetricLabor, InducedLabor OnsetLabor PainObstetric Labor, PrematureObstetric Labor ComplicationsTrial of LaborPregnancyLabor PresentationDelivery, ObstetricCesarean SectionOxytocicsMyometriumAnalgesia, EpiduralUterine ContractionTerm BirthTocolytic AgentsCervical RipeningAmnionParturitionFetal MonitoringExtraembryonic MembranesPregnancy, ProlongedChorioamnionitisFetal Membranes, Premature RuptureAmniotic FluidPregnancy OutcomeParityUterine MonitoringAnesthesia, ObstetricalGestational AgeCervix UteriVaginal Birth after CesareanApgar ScorePostpartum HemorrhageEmploymentDystociaTocolysisUterine RuptureInfant, NewbornPregnancy Trimester, ThirdNatural ChildbirthMidwiferyPregnancy ComplicationsMeperidineChorionBupivacainePelvimetryObstetric NursingSufentanilAnesthesia, EpiduralPlacentaCervical Length MeasurementUterusReceptors, OxytocinPregnancy Complications, InfectiousHospitals, MaternityPremature BirthFetal DistressUterine InertiaPerineumEpisiotomyRitodrineFetal DeathObstetricsCesarean Section, RepeatHeart Rate, FetalMisoprostolAmniocentesis