MA Bergmann, ME Goebeler, M Herold, B Emmerich, M Wilhelm, C Ruelfs, L Boening, MJ Hallek, German CLL Study Group. Efficacy of bendamustine in patients with relapsed or refractory chronic lymphocytic leukemia: results of a phase I/II study of the German CLL Study Group. Haematologica 2005;90(10):1357-1364; https://doi.org/10.3324/%x.