13. Evidence of drug, alcohol abuse, and/or other psychiatric illness within the last 6 months prior to study enroll 14. At the time of the screen evaluation for this study, patients with platelet count<50,000/mm3, absolute neutrophil count of <1,500/mm3, white blood cell count of < 4,500/mm3, or patients who have an abnormal liver profile such as ALT, AST Alk Phos or total bilirubin>3 times the upper normal limit.