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Clinical Trials as TopicFetusFetal Tissue TransplantationComplicityAborted FetusDirected Tissue DonationPregnancyMaternal-Fetal ExchangePlacentaLifePersonhoodResearch DesignAbortion, VeterinaryBeginning of Human LifeResearchClinical Trials, Phase III as TopicTreatment OutcomeClinical Trials, Phase II as TopicGestational AgeClinical Trials, Phase I as TopicFetal ResearchTherapeutic Human ExperimentationControlled Clinical Trials as TopicDouble-Blind MethodRandomized Controlled Trials as TopicPregnancy, AnimalCivil RightsNontherapeutic Human ExperimentationTime FactorsPregnant WomenNeoplasmsAbortion, InducedResearch Support as TopicPatient SelectionAmniotic FluidBrain Tissue TransplantationUnited StatesEthics, MedicalExtraembryonic MembranesTissue DistributionAntineoplastic AgentsTranslational Medical ResearchFetal DiseasesInformed ConsentMulticenter Studies as TopicFetal ResorptionHydrops FetalisLiverSocial Control, FormalEthics, ResearchResearch PersonnelProspective StudiesPlacebosClinical Trials Data Monitoring CommitteesMoral ObligationsAdvisory CommitteesClinical ProtocolsFetal WeightEmbryonic and Fetal DevelopmentFetal DeathClinical Trials, Phase IV as TopicBiomedical ResearchAntibodies, MonoclonalFollow-Up StudiesAbortion, LegalPilot ProjectsDrug Administration ScheduleSingle-Blind MethodChorionic VilliPlacenta DiseasesFederal GovernmentFetal DevelopmentRisk AssessmentEarly Termination of Clinical TrialsQuestionnairesBrainCombined Modality TherapyMolecular Sequence DataRisk FactorsPregnancy Complications, InfectiousAntineoplastic Combined Chemotherapy ProtocolsNursing ResearchYolk SacReproducibility of ResultsRNA, MessengerInfant, NewbornDose-Response Relationship, DrugUterusTrophoblastsDrug Therapy, CombinationFetal BloodQuality of LifeSample SizeDisease Models, AnimalPregnancy Trimester, FirstEvidence-Based MedicineGovernment RegulationOutcome Assessment (Health Care)SheepHealth Services Research