3. Patients who failed corticosteroids (equivalent dosage of prednisone 0.5 mg/kg/day for more than 3 months), and at least two of the following: azathioprine, mycophenolate mofetil, gold, tetracycline (or minocycline), cyclosporin, methotrexate, gold, or plasmapheresis. Failure is defined as the inability to wean steroids to less than 0.5 mg/kg/day.