Other exclusion criteria were evidence of systemic infection or malignancy within the previous 5 years (except adequately treated nonmetastatic basal or squamous cell carcinoma of the skin), leukocyte count <2.5x103/µL, hemoglobin <80 g/dL, platelet count <100x103/µL, severe intestinal disorders, pregnancy, breast feeding, current immunosuppressive treatment with drugs other than cyclosporine and mycophenolate mofetil. Women of childbearing age were required to use adequate contraception during treatment with mycophenolate mofetil and for six weeks after its discontinuation.