1. Department of Medicine/Hematology and Oncology, University of Muenster, Muenster;
2. Department of Nuclear Medicine, University of Muenster, Muenster;
3. Institute of Pathology, University of Muenster, Muenster;
4. Department of Pathology, University of Duesseldorf, Duesseldorf;
5. Department of Clinical Radiology, University of Muenster; Muenster; and
6. Department of Medicine B, University of Muenster, Muenster, Germany