Azathioprine
Oral azathioprine 2 mg/kg/day for 24 months, then reduced by 50% and withdrawn at month 27. Patients intolerant to azathioprine received either methotrexate (oral or subcutaneous), 25 mg/week, if their estimated glomerular filtration rate (eGFR) was >50 mL/min, or mycophenolate mofetil 2 g/day, if their eGFR was ≤50 mL/min.