Cyclophosphamide, Doxorubicin, Vincristine, and Prednisone With or Without Gemcitabine in Treating Patients With Previously Untreated Aggressive Non-Hodgkin's Lymphoma
European Organisation for Research and Treatment of Cancer - EORTC
European Organisation for Research and Treatment of Cancer - EORTC
European Organisation for Research and Treatment of Cancer - EORTC