1. Division of Hematopathology, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA;
2. Department of Pathology, Hospital Clinic, University of Barcelona, August Pi i Sunyer Biomedical Research Institute, Barcelona, Spain;
3. Haematopathology Unit, European Institute of Oncology, Milan, and Department of Experimental, Diagnostic and Specialty Medicine, Bologna University Medical School, Bologna, Italy;
4. Department of Pathology, Harvard Medical School and Massachusetts General Hospital, Boston, MA;
5. Pathodiagnostik, Berlin, Germany;
6. Institute of Human Genetics, Christian Albrechts University Kiel, Kiel, Germany;
7. Division of Oncology, Department of Medicine, Stanford University, Stanford, CA;
8. Department of Medical Oncology, Oncology Institute of Southern Switzerland, Bellinzona, Switzerland;
9. Department of Hematology, Hospices Civils de Lyon, and Université Claude Bernard Lyon-1, Lyon, France;
10. Department of Medicine, Memorial Sloan Kettering Cancer Center and Weill Cornell Medical College, New York, NY; and
11. Hematopathology Section, Laboratory of Pathology, National Cancer Institute, Bethesda, MD