12. Patients must have adequate bone marrow function (ANC>/= 1,500/mm^3 and platelet count of >/= 100,000/mm^3), adequate liver function (SGPT </= 3 times normal and alkaline phosphatase </= 2 times normal, bilirubin </= 1.5 mg/dl), adequate renal function (BUN and creatinine </= 1.5 times institutional normal) prior to registration.