1. Department I of Internal Medicine, Center for Integrated Oncology Köln Bonn, Deutsche CLL Studiengruppe (DCLLSG), Excellence Cluster for Cellular Stress Response and Aging-Associated Diseases (CECAD), and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany;
2. Medizinische Klinik und Poliklinik III, LMU University of Munich, Munich, Germany;
3. National Center for Tumor Diseases Heidelberg, Heidelberg, Germany;
4. Klinik für Hämatologie, University of Essen, Essen, Germany;
5. Department of Internal Medicine III, University of Ulm, Ulm, Germany;
6. AKH Wien, Universitätsklinik für Innere Medizin I, Vienna, Austria