A 3-arm prospective randomized study of darbepoetin alpha administration after autologous PBSC transplantation. Patients in the first arm will receive neither darbepoetin alpha nor i.v. iron. Patients in the second arm will receive darbepoetin alpha (Aranesp) alone starting on day 28 after the transplant. Patients in the third arm will receive darbepoetin alpha (Aranesp) and i.v. iron saccharate (Venofer). The plan is to include 25 patients in each arm.