Tissue and Organ ProcurementTissue DonorsUnited States Health Resources and Services AdministrationTissue BanksBrain DeathDonor SelectionOrgan TransplantationValue-Based PurchasingTissue and Organ HarvestingWaiting ListsUnited StatesPresumed ConsentCadaverDeathLiving DonorsOrgan PreservationLiver TransplantationKidney TransplantationDirected Tissue DonationPrinciple-Based EthicsFacility Regulation and ControlHealth Care RationingTransplantationGraft SurvivalInformed ConsentEnd Stage Liver DiseaseTransplantsHeart TransplantationEthics, MedicalBlood DonorsLiver FailureRetrospective StudiesFamilyTime FactorsRegistriesDrugs, EssentialTransplantation, HomologousTreatment OutcomeGraft RejectionPatient Selection