NCT02842931 2016-07-25R-Dose-adjusted (DA) - EPOCH-21 Versus R-modified Non-Hodgkin Lymphoma (NHL)-Berlin-Frankfurt-Munster (BFM)-90 Program (mNHL-BFM-90) and Autologous Stem Cells Transplantation (Auto-SCT) in DLBCL With Poor PrognosisNational Research Center for Hematology, RussiaPhase 3 Unknown300 enrolled