Fetal Growth RetardationPlacental InsufficiencyPregnancyPlacentaPlacental CirculationUmbilical ArteriesPlacenta DiseasesGestational AgePre-EclampsiaFetal DevelopmentUltrasonography, PrenatalInfant, NewbornInfant, Small for Gestational AgeBirth WeightFetal WeightPregnancy OutcomePregnancy ComplicationsUltrasonography, DopplerFetusUltrasonography, Doppler, PulsedTrophoblastsFetal DeathUterine ArteryPlacentationPregnancy Complications, HematologicMaternal-Fetal ExchangeFetal HypoxiaPregnancy Trimester, ThirdPregnancy Trimester, SecondInfant, Low Birth WeightCampylobacter rectusFetal MonitoringPremature BirthPrenatal Exposure Delayed EffectsHELLP SyndromePulsatile FlowUterusInfant, PrematureHeart Rate, FetalFetal Nutrition DisordersHypertension, Pregnancy-InducedFetal BloodPrenatal Nutritional Physiological PhenomenaMaternal Nutritional Physiological PhenomenaAmino Acid Transport System AUmbilical CordOrgan SizeChorionic VilliPregnancy Trimester, FirstBlood Flow VelocityPregnancy, High-RiskCaloric RestrictionChorionic Villi SamplingPolyhydramniosFetal HeartCase-Control StudiesSheepStillbirthFetal DistressChild DevelopmentUltrasonography, Doppler, ColorDihydralazineDiet, Protein-RestrictedAmniotic FluidApgar ScoreTwins, MonozygoticFetal DiseasesThrombophiliaPregnancy Complications, CardiovascularDNA Restriction EnzymesPregnancy Reduction, MultifetalPregnancy TrimestersFetofetal TransfusionProspective StudiesEar, ExternalArteriesPregnancy ProteinsObstetric Labor, PrematureDiseases in TwinsPolymorphism, Restriction Fragment LengthPregnancy, Multiple11-beta-Hydroxysteroid DehydrogenasesOligohydramniosSheep, DomesticCircle of WillisAnimals, NewbornCesarean SectionRisk FactorsDelivery, ObstetricReference ValuesBody WeightUmbilical VeinsMiddle Cerebral ArteryDisease Models, AnimalInfant, Premature, DiseasesAbortion, SpontaneousCohort StudiesRNA, MessengerRetrospective StudiesPregnancy Complications, Infectious