Kidney TransplantationOrgan TransplantationTissue DonorsGraft RejectionImmunosuppressive AgentsLiver TransplantationGraft SurvivalHeart TransplantationTransplantationTacrolimusMycophenolic AcidKidneyCyclosporineBK VirusTransplantation, HomologousKidney Failure, ChronicImmunosuppressionLiving DonorsPolyomavirus InfectionsKidney DiseasesDelayed Graft FunctionTissue and Organ ProcurementTime FactorsTransplantsPostoperative ComplicationsCytomegalovirus InfectionsTreatment OutcomeRetrospective StudiesLung TransplantationPancreas TransplantationCadaverImmunocompromised HostAntilymphocyte SerumRisk FactorsGlomerular Filtration RateCreatinineHistocompatibility TestingWaiting ListsFollow-Up StudiesIranIsoantibodiesSirolimusAzathioprineCalcineurinKidney Function TestsPrimary Graft DysfunctionCytomegalovirusTransplantation ImmunologyBiopsyProspective StudiesDrug MonitoringGanciclovirHLA AntigensDonor SelectionIncidenceDrug SubstitutionBone Marrow TransplantationComplement C4bRenal InsufficiencyDrug Therapy, CombinationRenal DialysisCohort StudiesProportional Hazards ModelsSurvival RateLymphoproliferative DisordersTablets, Enteric-CoatedGingival HyperplasiaAntiviral AgentsBiological MarkersPostoperative PeriodTranscultural NursingHeart-Lung TransplantationKaplan-Meier EstimateMultivariate AnalysisTumor Virus InfectionsChi-Square DistributionFatal OutcomeSurvival AnalysisRisk AssessmentBronchiolitis ObliteransOpportunistic InfectionsGingival OvergrowthInfectionIMP DehydrogenaseHematopoietic Stem Cell TransplantationPrognosisAcute DiseasePrednisoneDirected Tissue DonationLiver FailureAdrenal Cortex HormonesMycosesRecurrenceKidney TubulesPorphyromonasAge FactorsRegistriesViremiaPrevalenceProteinuria