1. Institute of Pathology and Neuropathology, Eberhard Karls University of Tübingen and Comprehensive Cancer Center, University Hospital Tübingen, Tübingen, Germany;
2. Hematopathology Section, Laboratory of Pathology, National Cancer Institute, Bethesda, MD;
3. Department of Cellular Pathology, Barts and The London NHS Trust, London, United Kingdom;
4. Hematopathology Unit, Hospital Clínic, Institut d’Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain;
5. Pathology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain;
6. Pathology Department, Instituto Portugues de Oncología, Lisboa, Portugal;
7. Department of Histopathology, Guy’s and St. Thomas Hospitals, London, United Kingdom;
8. Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY;
9. Institute of Pathology, University of Würzburg, and Comprehensive Cancer Center Mainfranken, Würzburg, Germany;
10. Department of Clinical Pathology, Robert-Bosch-Hospital and Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany;
11. Department of Pathology, All Wales Lymphoma Panel, University Hospital of Wales, Cardiff, United Kingdom;
12. Hospital Universitario 12 de Octubre, Madrid, Spain;
13. Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany; and
14. Department of Pathology, Instituto Nacional de Cancerologia, Mexico City, Mexico