1. José-Carreras-Center for Immuno- and Gene Therapy, Department of Internal Medicine I, Saarland University Medical School, Homburg/Saar, Germany;
2. Department of Clinical Therapeutics, University of Athens School of Medicine, Athens, Greece;
3. IMISE, Leipzig University, Germany;
4. Bing Center for Waldenstrom's Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA