EclampsiaMaternal AgeGestational AgePregnancyInfant, NewbornInfant, Small for Gestational AgeInfant, PrematureMagnesium SulfatePre-EclampsiaPremature BirthPregnancy OutcomeBirth WeightMaternal MortalityHELLP SyndromeObstetric Labor, PrematurePregnancy ComplicationsInfant, Premature, DiseasesHypertension, Pregnancy-InducedUltrasonography, PrenatalInfant, Low Birth WeightParityDown SyndromePregnancy, High-RiskPregnancy Complications, CardiovascularPregnancy Trimester, SecondBirth OrderCesarean SectionFetal DeathPuerperal DisordersInfant MortalityRisk FactorsPaternal AgePregnancy Trimester, FirstFetal Growth RetardationDelivery, ObstetricAmniocentesisTocolytic AgentsPerinatal MortalityTerm BirthObstetric Labor ComplicationsAbruptio PlacentaePrenatal CareInfant, Very Low Birth WeightPregnancy, MultipleCrown-Rump LengthPrenatal DiagnosisFetal Membranes, Premature RupturePregnancy Trimester, ThirdRetrospective StudiesAmniotic FluidProspective StudiesFetusIntensive Care Units, NeonatalCongenital AbnormalitiesStillbirthBirth CertificatesChorioamnionitisFetal DevelopmentFetal DiseasesTwinsPosterior Leukoencephalopathy SyndromeAbortion, SpontaneousCohort StudiesPlacentaApgar ScoreInfant, Extremely PrematureRespiratory Distress Syndrome, NewbornChild DevelopmentObstetricsBronchopulmonary DysplasiaMothersNigeriaTrisomy