1. Department of Haematology; Medical University of Lodz and Copernicus Memorial Hospital; Lodz Poland
2. Department of Hematology; Medical University of Gdansk; Gdansk Poland
3. Department of Haematology; Medical University of Bialystok; Bialystok Poland
4. Haematology; Hospital Universitario La Princesa; IIS-IP Madrid Spain
5. Department of Haematology; Institute of Haematology and Transfusion Medicine; Warsaw Poland
6. Department of Haematology and Transfusion Medicine; Centre of Postgraduate Medical Education; Warsaw Poland
7. Fred Hutchinson Cancer Research Center; University of Washington; Seattle WA USA
8. Center for CLL; University of Pennsylvania and Hackensack University; Philadelphia PA USA
9. Division of Hematology; The Ohio State University; Columbus OH USA
10. Department of Haematology/Oncology; Stauferklinikum Schwaebisch Gmuend; Mutlangen Germany
11. Hospital U. Puerta de Hierro-Majadahonda; Madrid Spain
12. Department of Hematologic Oncology and Blood Disorders; Taussig Cancer Institute, Cleveland Clinic; Cleveland OH USA
13. Department I of Internal Medicine; Centre of Integrated Oncology Koln and Cluster of Excellence on Cellular Stress Responses in Aging (CECAD) University of Cologne; Cologne Germany
14. German CLL Study Group
15. Aptevo Therapeutics; Seattle WA USA
16. Department of Medicine I; Division of Haematology and Haemostaseology; Medical University of Vienna; Vienna Austria