 cyclophosphamide, vincristine, doxorubicin, dexamethasone and high dose methotrexate and cytarabine); CODOX-M/IVAC (i.e.cyclophosphamide, vincristine, doxorubicin, high-dose methotrexate and ifosfamide, etoposide, and high-dose cytarabine); COMB (i.e.cyclophosphamide, oncovin, methyl-CCNU, and bleomycin); and infusional EPOCH (i.e.