6. Screening blood tests must meet the following criteria: white blood cell count > 3000/µL (with neutrophils > 1500/µL and lymphocytes > 500/µL), hemoglobin > 8 g/dL, platelet count > 100,000/µL, liver function tests < 3 times the upper limit of normal, serum creatitine < 1.5 mg/dL