Fetal Growth RetardationPregnancyFetal DevelopmentFetal WeightBirth WeightPlacentaGestational AgeEmbryonic and Fetal DevelopmentInfant, Small for Gestational AgePregnancy ComplicationsInfant, NewbornInfant, Low Birth WeightGrowth DisordersIntellectual DisabilityUltrasonographyUltrasonography, PrenatalMental Retardation, X-LinkedAbnormalities, MultipleFetusMaternal-Fetal ExchangeFetal DeathPregnancy Trimester, ThirdPregnancy OutcomeGrowthPlacental InsufficiencyUltrasonicsUltrasonic TherapyFragile X Mental Retardation ProteinPlacental CirculationPregnancy Trimester, SecondSyndromeHigh-Intensity Focused Ultrasound AblationUmbilical ArteriesPre-EclampsiaUltrasonography, InterventionalMicrocephalyBody HeightFetal DiseasesMicrobubblesPlacenta DiseasesUltrasonography, DopplerFaciesMaternal Nutritional Physiological PhenomenaCrown-Rump LengthBody WeightPrenatal Exposure Delayed EffectsMaternal ExposureProspective StudiesOrgan SizePregnancy Trimester, FirstHeadGenomic ImprintingUterusPhenotypePrenatal DiagnosisAbnormalities, Drug-InducedUltrasonography, Doppler, ColorPregnancy in DiabeticsFetal MacrosomiaAnthropometryPregnancy, AnimalInsulin-Like Growth Factor IObstetric Labor, PrematureFetal ResorptionDwarfismFragile X SyndromeGrowth HormonePremature BirthFetal BloodTransducersFetal HypoxiaLitter SizeAmino Acid Transport System ATrophoblastsInsulin-Like Growth Factor IINutrition Disorders