ChorioamnionitisFetal Membranes, Premature RuptureObstetric Labor, PrematureAmniotic FluidInfant, PrematurePregnancyPremature BirthAmnionInfant, NewbornGestational AgeExtraembryonic MembranesChorionInfant, Premature, DiseasesUreaplasma InfectionsPlacentaPregnancy Complications, InfectiousBronchopulmonary DysplasiaTerm BirthUreaplasmaLabor, ObstetricRespiratory Distress Syndrome, NewbornPregnancy OutcomeLeukemoid ReactionAbortion, SepticFetusSheep, DomesticAdrenergic beta-3 Receptor AgonistsHistocompatibility, Maternal-FetalAmniocentesisUmbilical CordInfant, Very Low Birth WeightAbruptio PlacentaePregnancy ComplicationsFetal DeathDelivery, ObstetricSheepBetamethasoneFetal DistressEndometritisPregnancy Trimester, ThirdUreaplasma urealyticumBirth WeightFetal Organ MaturitySepsisPlacenta DiseasesMeconiumPregnancy Trimester, SecondInfant, Newborn, DiseasesRisk FactorsMatrix Metalloproteinase 8Retrospective StudiesChemokine CXCL10Interleukin-1alphaProspective StudiesChemokine CXCL11