Rituximab and bendamustine in patients with CD20+ diffuse large B-cell lymphoma not eligible for cyclophosphamide, doxorubicin, vincristine and prednisone-like chemotherapy - Walter, Eva; Schmitt, Thomas; Dietrich, Sascha; Ho, Anthony Dick; Witzens-Harig, Mathias (Leukemia and lymphoma, 2012)