Phase 2 Randomized Trial Comparing 6 Cycles of Standard RCHOP Chemotherapy Vs 6 Cycles of Brcap (bortezomib, rituximab, cyclophosphamide, adriamicine and prednisone) As First Line Treatment in Young Patients with Poor Prognosis Diffuse Large B-Cell Lymphoma (DLBCL): Interim Analysis | Publicación