Kidney TransplantationImmunosuppressive AgentsGraft RejectionGraft SurvivalTacrolimusTissue DonorsKidneyRenal Plasma Flow, EffectiveTransplantationKidney Failure, ChronicMycophenolic AcidCyclosporineBK VirusTransplantation, HomologousTreatment OutcomeTime FactorsRetrospective StudiesImmunosuppressionPolyomavirus InfectionsKidney DiseasesLiving DonorsDelayed Graft FunctionOrgan TransplantationLiver TransplantationPostoperative ComplicationsCytomegalovirus InfectionsTransplantsHeart TransplantationPancreas TransplantationLung TransplantationCadaverProspective StudiesImmunocompromised HostAntilymphocyte SerumRisk FactorsGlomerular Filtration RateTissue and Organ ProcurementCreatinineIranHistocompatibility TestingWaiting ListsFollow-Up StudiesSirolimusAzathioprineWilms TumorCalcineurinKidney Function TestsIsoantibodiesPrimary Graft DysfunctionAge FactorsDrug MonitoringCytomegalovirusBiopsyGanciclovirDrug SubstitutionTransplantation ImmunologyHLA AntigensComplement C4bIncidenceRenal InsufficiencyDrug Therapy, CombinationRenal DialysisDonor SelectionCohort StudiesProportional Hazards ModelsTablets, Enteric-CoatedGingival HyperplasiaBone Marrow TransplantationSurvival RateLymphoproliferative DisordersTranscultural NursingBiological MarkersAntiviral AgentsPostoperative Period