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