1. Institute of Agrobiotechnology, Center for Research and Technology Hellas, Thessaloniki, Greece;
2. Department of Hematology and Hematopoietic Cell Transplantation (HCT) Unit, G. Papanicolaou Hospital, Thessaloniki, Greece;
3. School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece;
4. Department of Immunology, Genetics, and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden;
5. Hopital Henri Mondor, Assistance Publique–Hôpitaux de Paris (AP-HP), and Universite Paris–XII Val de Marnes, Creteil, France;
6. Department of Immunology, Hopital Henri Mondor AP-HP, and Universite Paris–XII Val de Marne, Creteil, France;
7. Department of Haematology, Rigshospitalet, Copenhagen, Denmark;
8. Department of Pathology, Hospital Clinic, and Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain;
9. Laboratory of B Cell Neoplasia and Unit of Lymphoid Malignancies, Università Vita-Salute San Raffaele and Istituto Scientifico San Raffaele, Milan, Italy;
10. Department of Pathology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands;
11. Hôpital Necker AP-HP, Paris, France;
12. Department of Oncology, The Norwegian Radium Hospital, Oslo, Norway;
13. Department of Internal Medicine III, University Hospital Munich–Campus Grosshadern, Munich, Germany;
14. Pathology Department, University of Wuerzburg, Wuerzburg, Germany;
15. Pathology Unit and Unit of Lymphoid Malignancies, San Raffaele Scientific Institute, Milan, Italy;
16. Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet and Karolinska University Hospital, Huddinge, Sweden;
17. Department of Hematopathology, Evangelismos Hospital, Athens, Greece;
18. Service d'Hematologie Biologique, AP-HP, Hopital Pitié-Salpêtrière, Paris, France; and
19. Second Department of Medicine, University Medical Center Schleswig-Holstein, Kiel, Germany