AnatomyDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPsychiatry and PsychologyPhenomena and ProcessesDisciplines and OccupationsAnthropology, Education, Sociology and Social PhenomenaTechnology, Industry, AgricultureInformation ScienceNamed GroupsHealth Care
Pregnancy Trimester, SecondPregnancy Trimester, FirstPregnancy Trimester, ThirdPregnancy TrimestersPregnancyUltrasonography, PrenatalGestational AgeFetal DiseasesPregnancy ComplicationsPregnancy OutcomePrenatal DiagnosisDown SyndromeAbortion, InducedAmniotic FluidPre-EclampsiaAmniocentesisAbortifacient AgentsAbortion, SpontaneousFetusFetal DevelopmentPlacentaMisoprostolAbortifacient Agents, NonsteroidalPregnancy Complications, NeoplasticInfant, NewbornFetal Growth RetardationPregnancy Complications, InfectiousCrown-Rump LengthAbortifacient Agents, SteroidalFetal DeathEstriolPregnancy Complications, Cardiovascularalpha-FetoproteinsFetal HeartTrophoblastsPlacental CirculationUterine ArteryMaternal ExposureAbortion, TherapeuticTrisomyDilatation and CurettageBirth WeightProspective StudiesObstetric Labor, PrematureChorionic VilliPregnancy, High-RiskPremature BirthMaternal AgePostpartum PeriodNasal BoneChorionic Gonadotropin, beta Subunit, HumanPrenatal Exposure Delayed EffectsPrenatal CareUterine RuptureAborted FetusPregnancy ProteinsPregnancy-Associated Plasma Protein-AInfant, Small for Gestational AgeHypertension, Pregnancy-InducedNuchal Translucency MeasurementFetal Membranes, Premature RuptureUterusAdministration, IntravaginalChorionic Villi SamplingMaternal-Fetal ExchangeAbortion, ThreatenedPregnancy Complications, HematologicUterine HemorrhageMaternal Nutritional Physiological PhenomenaFetoscopyCongenital AbnormalitiesUltrasonography, Doppler, ColorPlacenta PreviaParityAbortion, HabitualChromosomes, Human, Pair 18ForeheadEmbryonic and Fetal DevelopmentUltrasonography, DopplerAbortion, LegalReference ValuesChromosome DisordersPlacenta DiseasesFetofetal TransfusionHydatidiform MolePregnancy, MultipleEctromeliaNeckOligohydramniosFetal BloodRetrospective StudiesUltrasonography, Doppler, PulsedCohort StudiesUmbilical ArteriesTwinsPredictive Value of TestsFalse Positive ReactionsVaginosis, BacterialChorionic GonadotropinPregnancy in Diabetics