1. Institute of Pathology, University of Würzburg, Würzburg, Germany;
2. Institute of Pathology, Robert-Bosch Hospital and Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany;
3. Institute for Medical Informatics, Statistics, and Epidemiology, University of Leipzig, Leipzig, Germany;
4. Institute of Hematopathology and Lymph Node Registry, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Germany;
5. Institute of Pathology, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Lübeck, Germany;
6. Institute of Pathology, Campus Benjamin Franklin, Charité Universitätsmedizin, Berlin, Germany;
7. Institute of Pathology, Universitätsklinikum Frankfurt, Frankfurt, Germany,
8. Institute of Pathology, Universitätsklinikum Ulm, Ulm, Germany;
9. Institute of Pathology, Kantonsspital St Gallen, St Gallen, Switzerland;
10. Medizinische Klinik I, Saarland University Medical School, Homburg/Saar, Germany;
11. Department of Hematology, Asklepios Klinik St Georg, Hamburg, Germany; and
12. Department of Hematology and Oncology, Georg-August Universität, Göttingen, Germany