IMMUNOSUPPRESSION: Patients receive cyclosporine orally (PO) BID on days -3 to 56 (patients with related donors) or 100 (patients with unrelated donors) followed by taper to day 180. Patients also receive mycophenolate mofetil PO BID on days 0-27 (patients with related donors) or thrice daily (TID) on days 0-27, then BID on days 28-40 followed by taper to day 96 (patients with unrelated donors).