PregnancyPregnancy OutcomePregnancy ComplicationsPregnancy, AnimalPregnancy, EctopicPregnancy Trimester, FirstPregnancy RatePregnancy Trimester, ThirdReversal LearningPregnancy Complications, CardiovascularPregnancy TrimestersPregnancy TestsPregnancy, MultiplePregnancy, TubalPregnancy in DiabeticsPregnancy Trimester, SecondPregnancy Complications, NeoplasticPregnancy in AdolescenceTreatment OutcomePregnancy Complications, InfectiousAbortion, SpontaneousPostoperative ComplicationsRetrospective StudiesPregnancy ProteinsPregnancy, UnplannedPregnancy, High-RiskTime FactorsPregnancy, UnwantedGestational AgeProspective StudiesBariatric SurgeryInfant, NewbornPregnancy Complications, HematologicPlacentaPregnancy, ProlongedPre-EclampsiaPregnancy, TwinGeneral SurgeryFetal DeathFollow-Up StudiesUterusThoracic SurgeryAbortion, InducedRisk FactorsFertilization in VitroPregnancy, AbdominalEmbryo TransferUltrasonography, PrenatalCardiac Surgical ProceduresEmbryo ImplantationPregnancy Complications, ParasiticPregnancy MaintenancePrenatal CarePostoperative PeriodMaternal-Fetal ExchangeParityPrenatal Exposure Delayed EffectsSurgery, PlasticBirth WeightCesarean SectionLaparoscopyPregnancy Reduction, MultifetalCohort StudiesInfertility, FemaleMaternal AgeProgesteroneHypertension, Pregnancy-InducedPreoperative CareFertilityFetal Growth RetardationThoracic Surgery, Video-AssistedSurgery, Computer-AssistedSurgical Procedures, OperativeCataract ExtractionPostoperative CareFetusPremature BirthLactationReoperationAbortifacient Agents, NonsteroidalCongenital AbnormalitiesCoronary Artery BypassAbnormalities, Drug-InducedDeciduaLabor, ObstetricRisk AssessmentFetal DevelopmentPrenatal DiagnosisChorionic GonadotropinObstetric Labor, PrematureTwinsSurgery, OralMaternal ExposureInsemination, ArtificialFetal DiseasesAbortion, TherapeuticIntraoperative ComplicationsDiabetes, GestationalTrophoblastsSurgical Procedures, Elective