* Platelets >= 100 x 10^9 cells/ L (unsupported, defined as no platelet transfusion within 7 days) Hemoglobin >= 8g/dl (unsupported) ANC > 1,500/µl (unsupported by growth factors) and Absolute neutrophil count >= 1000/ mm^3 (unsupported) and documented within 14 days prior to registration and within 14 days prior to the start of treatment Platelets >= 100,000/ mm^3 (unsupported) and documented within 14 days prior to registration and within 14 days prior to the start of treatment Documented within 14 days of registration: Absolute neutrophil count >= 1000/ul (unsupported) Documented within 14 days of registration: Platelets >= 75,000/ul (unsupported) Platelets >= 75,000 cells /uL (unsupported, defined as no platelet transfusion within 7 days) INCLUSION CRITERIA FOR STRATUM C: Platelets >= 75,000 cells/uL (unsupported, defined as no platelet transfusion within 7 days) Absolute neutrophil count >= 1,000/uL (unsupported), within 14 days of registration and within 7 days of the start of treatment Platelets >= 100,000/L (unsupported), within 14 days of registration and within 7 days of the start of treatment Platelets >= 100,000/ul (unsupported) Platelets >= 80,000 x 10^9/L unsupported by transfusions (within 14 days of study registration) Hemoglobin >= 9 g/dL, unsupported by transfusions (within 14 days of study registration) Platelets >= 100 x 10^9 cells/L (unsupported, defined as no platelet transfusion within 7 days) Platelets >= 80,000 x 10^9/L, unsupported by transfusions Hemoglobin >= 9 g/dL, unsupported by transfusions Absolute neutrophil count (ANC) >= 1000 x 10^9/L, unsupported by filgrastim (G-CSF) or granulocytes Within 14 days of registration: Platelets >= 100,000/mcL unsupported by transfusions Platelets ? 75,000/mm3 (unsupported for 7 days) Hemoglobin ? 9g/dl (unsupported) for 7 days Platelets >= 100,000/mm^3 (unsupported, defined as no platelet transfusion within 7 days and recovery from nadir) Platelets >= 100,000/ul (unsupported) Hemoglobin (Hg) >= 8g/dL (unsupported) Absolute neutrophil count >= 1,000/mm^3 (unsupported) Platelet count >= 100,000/mm^3 (unsupported) Absolute neutrophil count >= 1,000/mm^3 (unsupported) Platelet count >= 75,000/mm^3 (unsupported) Adequate bone marrow function (hemoglobin ? 9.0 g/dL; unsupported platelets ? 100×109 cells/L; absolute neutrophil count [ANC] ? 1.5×109 cells/L without the use of hematopoietic growth factors) Adequate bone marrow function (hemoglobin ? 9.0 g/dL; unsupported platelets ? 100 x10 9 cells/L; absolute neutrophil count ? 1.5x10 9 cells/L Hemoglobin >= 9 g/dL unsupported by transfusions within 7 days Platelets >= 100,000/mm^3 (unsupported) Hemoglobin >= 10 g/dL (unsupported) Absolute neutrophil count (ANC) ? 500/?l and platelets ? 20000/?l (unsupported by transfusions).