Azathioprine6-MercaptopurineImmunosuppressive AgentsPrednisoloneToxicity TestsMycophenolic AcidMethyltransferasesInflammatory Bowel DiseasesCrohn DiseaseCyclosporineKidney TransplantationThioguaninePrednisoneHepatitis, AutoimmuneDrug Therapy, CombinationColitis, UlcerativeLeukopeniaAdrenal Cortex HormonesGraft RejectionTreatment OutcomeImmunosuppressionMethylprednisoloneGastrointestinal AgentsToxicity Tests, AcuteAntimetabolitesAnti-Inflammatory AgentsMesalamineCyclosporinsAminosalicylic AcidsCyclophosphamideNiridazoleDrug Administration ScheduleDose-Response Relationship, DrugSulfasalazinePulse Therapy, DrugLupus NephritisGuanine NucleotidesRemission InductionTime FactorsRecurrenceTacrolimusGlucocorticoidsGraft SurvivalThionucleotidesFollow-Up StudiesAdministration, Oral