- Patients must have, within 6 weeks prior to entry, a hemoglobin (Hgb) of >=10 gm, a white blood cell (WBC) count of >= 4000 cells/ml3, a platelet count of >= 100,000 cells/ml3, a serum bilirubin <= the institutional upper limit of normal, a serum serum glutamic-oxaloacetic transaminase (SGOT) or serum glutamic-pyruvic transaminase (SGPT) of <= 2.5 times the institutional upper limit of normal, and a serum creatinine of <= 2.0 times the institutional upper limit of normal.