. . . "Therapy with low-dose methotrexate (???0.4 mg/kg/week), azathioprine (???3.0 mg/kg/day), or 6-mercaptopurine (???1.5 mg/kg/day) for treatment of rheumatoid arthritis, psoriasis, polymyositis, sarcoidosis, inflammatory bowel disease, or other conditions" . . .