1. Department of Haematology; Royal Perth Hospital; Perth Australia
2. Department I of Internal Medicine; German Hodgkin Study Group (GHSG); Cologne Germany
3. Department of Pathology; Hematopathology Section; University Hospital Schleswig-Holstein, Campus Kiel; Kiel Germany
4. Else Kröner Forschungskolleg Clonal Evolution in Cancer; University Hospital of Cologne; Cologne Germany
5. Centre for Molecular Medicine Cologne; University of Cologne; Cologne Germany