1. Department I of Internal Medicine and Center of Integrated Oncology Aachen, Bonn, Cologne, Duesseldorf; German CLL Study Group University of Cologne Cologne Germany
2. Genentech Inc South San Francisco California USA
3. AbbVie Inc. North Chicago Illinois USA
4. Roche Products Limited Welwyn Garden City UK
5. Department of Hematology, Oncology, Immunology, Palliative Care, Infectious Diseases and Tropical Medicine Klinikum Schwabing Munich Germany