1. 1Haematopathology Section, Hospital Clínic of Barcelona, Institut d’Investigaciones Biomèdiques August Pi I Sunyer (IDIBAPS), University of Barcelona, Centro de Investigación Biomédica en Red de Cancer (CIBERONC), Barcelona, Spain;
2. 2Hematopathology Section, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD;
3. 3Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH;
4. 4Institute of Pathology and Neuropathology, Eberhard Karls University of Tübingen and Comprehensive Cancer Center, University Hospital Tübingen, Tübingen, Germany;
5. 5Department of Pathology, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA;
6. 6Dana-Farber Cancer Institute, Boston, MA;
7. 7Department of Pathology, Institut Universitaire du Cancer de Toulouse-Oncopole, and Laboratoire d’Excellence Toulouse Cancer, Toulouse, France;
8. 8Department of Dermatology, Medical University of Graz, Graz, Austria;
9. 9Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland;
10. 10Institute of Medical Genetics and Pathology, University Hospital Basel, University of Basel, Basel, Switzerland;
11. 11Laboratory of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY;
12. 12Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN;
13. 13Wilmot Cancer Institute, University of Rochester, Rochester, NY;
14. 14Department of Pathology, University Hospital Henri Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Créteil, France;
15. 15Mondor Institute for Biomedical Research, INSERM U955, Faculty of Medicine, University of Paris-Est Créteil, Créteil, France;
16. 16Strategic Research Program on Chronic Lymphocytic Leukemia, Division of Experimental Oncology, IRCCS Ospedale San Raffaele and Università Vita-Salute San Raffaele, Milan, Italy;
17. 17Lymphoma Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY;
18. 18Clínica Universidad de Navarra, Centro de Investigación Médica Aplicada, Instituto de Investigación Sanitaria de Navarra, CIBERONC, Pamplona, Spain;
19. 19Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, VIC, Australia;
20. 20Division of Hematology-Oncology, Department of Internal Medicine, University of Nebraska Medical Center, University of Nebraska, Omaha, NE;
21. 21Oncology Institute of Southern Switzerland, Ente Ospedaliero Cantonale, and Institute of Oncology Research, Università della Svizzera Italiana, Bellinzona, Switzerland;
22. 22Stanford Cancer Center, Blood and Marrow Transplant Program, Stanford University, Stanford, CA;
23. 23Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN;
24. 24Blood-Med Clinic, Hong Kong, People’s Republic of China;
25. 25Department of Pathology, Instituto Nacional de Enfermedades Neoplásicas, Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru;
26. 26Division of Hematology, Department of Internal Medicine, Mayo Clinic, Phoenix, AZ;
27. 27Department of Pathology, City of Hope National Medical Center, Duarte, CA;
28. 28Medical Virology Section, Laboratory of Infectious Diseases, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Bethesda, MD;
29. 29Department of Hematology, Aarhus University Hospital, Aarhus, Denmark;
30. 30Cancer Research UK Centre, Centre for Cancer Immunology, Faculty of Medicine, Southampton General Hospital, University of Southampton, Southampton, United Kingdom;
31. 31Institute of Hematology and Center for Hemato-Oncology Research, Hospital of Perugia, University of Perugia , Perugia, Italy;
32. 32Harvard Medical School, Harvard University, Boston, MA;
33. 33National Health Service Greater Glasgow and Clyde, Glasgow, United Kingdom;
34. 34Department of Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom;
35. 35Department of Pathology, Wake Forest School of Medicine, Wake Forest University, Winston-Salem, NC;
36. 36Oncology Division, Washington University School of Medicine, Washington University in St. Louis, St. Louis, MO;
37. 37Hematology and Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea;
38. 38Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital Muenster, Muenster, Germany;
39. 39Weill Department of Medicine, Weill Medical College, Cornell University, New York, NY;
40. 40Department of Pediatrics, Division of Pediatric Hematology-Oncology, Stanford University School of Medicine, Stanford University, Stanford, CA;
41. 41Department of Hematology, Hospital Clínic, IDIBAPS, University of Barcelona, Barcelona, Spain;
42. 42Department of Hematology, Hospital Universitario de Salamanca, Instituto de Investigación Biomédica de Salamanca, Centro de Investigación del Cancer, Universidad de Salamanca, Salamanca, Spain;
43. 43Laboratoire d’Onco-Hématologie, AP-HP, Hôpital Necker-Enfants Malades, Université de Paris Cité and Institut Necker-Enfants Malades, Paris, France;
44. 44Division of Hematology and Oncology, Weill Medical College, Cornell University, New York, NY;
45. 45Department of Hematology, Centre Hospitalier Universitaire de Lille, University Lille, Lille, France;
46. 46Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan;
47. 47Department of Pathology, Instituto de Investigaciones Hematológicas, Academia Nacional de Medicina and Fundacion para combatir la leucemia (FUNDALEU), Buenos Aires, Argentina;
48. 48Fundación para Combatir la Leucemia (FUNDALEU), Centro de Hematología Pavlovsky, Buenos Aires, Argentina;
49. 49Haematopathology Division, IRCCS, Istituto Europeo di Oncologia, Milan, Italy;
50. 50Jiménez Díaz Foundation University Hospital, Universidad Autónoma de Madrid, Madrid, Spain;
51. 51Division of Hematology and Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL;
52. 52Beckman Research Institute, and Department of Hematology & Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA;
53. 53Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden;
54. 54Centre for Lymphoid Cancer, British Columbia Cancer Agency, Vancouver, BC, Canada;
55. 55Section of Hematology/Oncology, University of Chicago, Chicago, IL;
56. 56Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD;
57. 57Service Hémato-Oncologie, AP-HP, Hôpital Saint-Louis, Paris, France;
58. 58DMU-DHI, Université de Paris-Paris Diderot, Paris, France;
59. 59Department of Pathology, Universitair Ziekenhuis Leuven Hospitals, Leuven, Belgium;
60. 60Department of Pathology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, Japan;
61. 61Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia "Seragnoli", Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy;
62. 62Department of Medicine III, Ludwig-Maximilians-University Hospital, Munich, Germany;
63. 63Feinberg School of Medicine, Northwestern University, Chicago, IL; and
64. 64Weill Medical College, Cornell University, New York, NY