TY - JOUR AU - Steinberg, AD; Steinberg, SC TI - Long-term preservation of renal function in patients with lupus nephritis receiving treatment that includes cyclophosphamide versus those treated with prednisone only JO - Arthritis Rheum IS - 08 VL - 34 PY - 1991 DO - 10.1002/art.1780340803 L3 - PubMed-ID: 1859488 SP - 945 EP - 950. ER -