1. University Hospital Cologne, Cologne, Germany
2. Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
3. University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
4. University of Cologne, Cologne, Germany
5. University Hospital Essen, Essen, Germany
6. Institute for Neuropathologie, Cologne, Germany
7. University Hospital of Cologne, Cologne, Germany
8. University of Cologne, Köln, Germany
9. 3Colgne Center for Genomics (CCG) and West German Genome Center (WGGC), University of Cologne, Cologne, Germany, Cologne, Germany
10. Uniklinik Koeln, Koeln, Germany
11. German Hodgkin Study Group, Germany