- Compare the overall survival and progression-free survival of patients with intermediate- or high-grade non-Hodgkin's lymphoma treated with high-dose chemoradiotherapy and autologous peripheral blood stem cell transplantation (APBSCT) vs conventional dose cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) (or CHOP plus rituximab for CD20+ disease) with possible late APBSCT.