Acellular DermisTissue DonorsTissue TransplantationBrain Tissue TransplantationDeltaretrovirus InfectionsDeltaretrovirus AntibodiesNucleic Acid Amplification TechniquesKidney TransplantationLiving DonorsBlood DonorsTransplantsGraft RejectionGraft SurvivalTransplantation, HomologousImmunosuppressive AgentsHeart TransplantationTransplantationTissue and Organ ProcurementLung TransplantationBone Marrow TransplantationHematopoietic Stem Cell TransplantationTreatment OutcomeHistocompatibility TestingCyclosporineTacrolimusTime FactorsWaiting ListsPostoperative ComplicationsRetrospective StudiesImmunosuppressionCadaverGraft vs Host DiseaseCytomegalovirus InfectionsTransplantation ImmunologyFetal Tissue TransplantationMycophenolic AcidLiver FailureHistocompatibilityKidney Failure, ChronicImmunocompromised HostTransplantation ConditioningFollow-Up StudiesRisk FactorsHLA AntigensBrain DeathHeart-Lung TransplantationTransplantation, AutologousTransplantation ToleranceTransplantation, HeterotopicTissue and Organ HarvestingBronchiolitis ObliteransIsoantibodiesRecurrenceCytomegalovirusHematologic NeoplasmsSurvival AnalysisSurvival Rate