1. Department of Medical Oncology Willamette Valley Cancer Institute and Research Center/US Oncology Research Eugene Oregon USA
2. Genentech, Inc. South San Francisco California USA
3. Roche Products Limited Welwyn Garden City UK
4. University of Cologne, Faculty of Medicine and University Hospital Cologne, Department I of Internal Medicine, German CLL Study Group, Center for Integrated Oncology Aachen Bonn Cologne Dusseldorf Germany
5. AbbVie North Chicago Illinois USA
6. Department of Hematology Cancer Center Amsterdam Lymphoma and Myeloma Center Amsterdam Amsterdam University Medical Centers Amsterdam the Netherlands
7. F. Hoffmann‐La Roche Ltd Basel Switzerland
8. Department of Leukemia The University of Texas MD Anderson Cancer Center Houston Texas USA