AgeusiaTissue and Organ ProcurementTissue DonorsBrain DeathPresumed ConsentOrgan TransplantationTissue and Organ HarvestingWaiting ListsCadaverTissue BanksDeathDonor SelectionOrgan PreservationUnited States Health Resources and Services AdministrationDirected Tissue DonationPrinciple-Based EthicsLiver TransplantationKidney TransplantationFacility Regulation and ControlHealth Care RationingTransplantationLiving DonorsUnited StatesGraft SurvivalValue-Based PurchasingInformed ConsentEnd Stage Liver DiseaseTransplantsHeart TransplantationEthics, MedicalLiver FailureFamilyDrugs, EssentialRetrospective StudiesRegistriesTime FactorsPosthumous ConceptionPatient SelectionMedicareTreatment OutcomeOrgan SpecificityGraft RejectionOrgan Preservation SolutionsTransplantation, Homologous