Kidney TransplantationTissue and Organ ProcurementLiving DonorsTissue DonorsLiver TransplantationWaiting ListsOrgan TransplantationGraft SurvivalTransplantsTransplantationHospitals, SpecialDonor SelectionGraft RejectionLiver FailureDirected Tissue DonationTransplantation, HomologousImmunosuppressive AgentsLung TransplantationHeart TransplantationCadaverRetrospective StudiesTreatment OutcomeKidney Failure, ChronicEnd Stage Liver DiseaseUnited StatesTime FactorsPancreas TransplantationHistocompatibility TestingPostoperative ComplicationsBone Marrow TransplantationPatient SelectionHematopoietic Stem Cell TransplantationTissue and Organ HarvestingLiver DiseasesSurvival RateSurvival AnalysisFollow-Up StudiesRisk FactorsRegistriesCytomegalovirus InfectionsMedicareIncidenceTransplantation, AutologousPostoperative CareGraft vs Host DiseaseProspective StudiesMultivariate AnalysisRisk AssessmentRecurrenceCohort StudiesPrognosisOutcome Assessment (Health Care)CyclosporineTacrolimusHealth Services AccessibilityProportional Hazards ModelsSeverity of Illness IndexImmunosuppressionGerminal CenterFetal Tissue TransplantationMycophenolic AcidChild Day Care CentersTransplantation ImmunologyImmunocompromised HostHeart-Lung TransplantationBrain Tissue TransplantationTertiary Care CentersCommunity Health CentersBronchiolitis ObliteransTrauma CentersTransplantation, HeterotopicHistocompatibilityOpportunistic InfectionsTransplantation ConditioningCytomegalovirusTransplantation ToleranceBiopsyBK VirusCenters for Disease Control and Prevention (U.S.)HLA AntigensKidneyGanciclovirIsoantibodiesAntilymphocyte SerumPolyomavirus InfectionsLymphoproliferative DisordersHematologic NeoplasmsKidney DiseasesCreatinineTransplantation, IsogeneicAcute DiseaseMycosesIslets of Langerhans TransplantationPostoperative PeriodPoison Control CentersRenal DialysisPhotosynthetic Reaction Center Complex ProteinsAntiviral AgentsKaplan-Meier EstimatePrimary Graft Dysfunction