Tissue DonorsDeltaretrovirus InfectionsDeltaretrovirus AntibodiesTissue and Organ ProcurementBrain DeathNucleic Acid Amplification TechniquesOrgan TransplantationLiving DonorsDonor SelectionTissue and Organ HarvestingLiver TransplantationCadaverBlood DonorsKidney TransplantationGraft SurvivalDirected Tissue DonationWaiting ListsTransplantsOrgan PreservationHeart TransplantationTransplantationLung TransplantationPresumed ConsentGraft RejectionLiver FailureBioartificial OrgansSculptureTissue BanksAltruismThird-Party ConsentTransplantation, HomologousInsurance, LifeHeart-Lung TransplantationPatient SelectionDeathPancreas TransplantationRetrospective StudiesTreatment OutcomeTime FactorsDisease Transmission, InfectiousDelayed Graft FunctionPostoperative ComplicationsLiverBlood-Borne PathogensImmunosuppressionTransplantation, HeterologousMoralsInformed ConsentUnited StatesFatal OutcomeIslets of Langerhans TransplantationHepatectomyRabies virusRisk AssessmentKidneyFamilySwineRabiesAttitudeIntensive Care UnitsHeart ArrestReperfusion InjuryPancreasDecision MakingPerfusion