1. Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden;
2. Central European Institute of Technology, Masaryk University and University Hospital Brno, Brno, Czech Republic;
3. Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece;
4. Oxford National Institutes of Health Research Biomedical Research Centre, University of Oxford, Oxford, United Kingdom;
5. Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom;
6. Hematology Department and Hematopoietic Cell Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece;
7. Università Vita-Salute San Raffaele and
8. Division of Experimental Oncology and Department of Onco-Hematology, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy;
9. Division of Hematology, Department of Translational Medicine, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy;
10. Department of Medical Sciences, Section of Hematology, Uppsala University, Uppsala, Sweden;
11. Department of Laboratory Medicine, Stem Cell Center, Lund University, Lund, Sweden;
12. Hematology Department, General Hospital of Nikea, Piraeus, Greece;
13. Karches Center for Chronic Lymphocytic Leukemia Research, The Feinstein Institute for Medical Research, Manhasset, New York;
14. First Department of Propaedeutic Medicine, School of Medicine, University of Athens, Athens, Greece;
15. Department of Immunology, Laboratory for Medical Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands;
16. Department of Medicine Solna, Clinical Epidemiology Unit, Karolinska Institutet, Stockholm, Sweden;
17. Department of Haematology, Royal Bournemouth Hospital, Bournemouth, United Kingdom;
18. Laboratory of Hematology and Universite Pierre et Marie Curie, Hopital Pitie-Salpetriere, Paris, France;
19. Second Medical Department, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany; and
20. Department of Medicine, Hematology and Clinical Immunology Branch, Padua University School of Medicine, Padua, Italy