1. Department of Oncology; Haematology and Bone Marrow Transplantation with Section Pneumology; Hubertus Wald Cancer Centre; University Medical Centre Hamburg-Eppendorf; Hamburg; Germany
2. Department of Pathology; Freiburg University Medical Centre; Freiburg; Germany
3. Department of Haematology and Oncology; Freiburg University Medical Centre; Freiburg; Germany
4. Division of Haematology and Bone Marrow Transplantation; Chaim Sheba Medical Centre; Tel Hashomer; Israel
5. Division of Pathology; Chaim Sheba Medical Centre; Tel Hashomer; Israel
6. Department of Stem Cell Transplantation; Hubertus Wald Cancer Centre; University Medical Centre Hamburg-Eppendorf; Hamburg; Germany
7. Institute of Pathology; University Medical Centre Hamburg-Eppendorf; Hamburg; Germany
8. Institute of Neuropathology; University Medical Centre Hamburg-Eppendorf; Hamburg; Germany
9. Institute of Haematopathology; Hamburg; Germany
10. Department of Oncology; Haematology and Stem Cell Transplantation; University Hospital Aachen; Aachen; Germany
11. Department of Internal Medicine; St. Joseph-Hospital; Bremerhaven; Germany
12. Department of Medical Biometry and Epidemiology; University Medical Centre Hamburg-Eppendorf; Hamburg; Germany