1. Department of Radiation Oncology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
2. Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
3. Department of Oncology, St. Franziskus-Hospital, Hohenzollernring 70, 48145 Muenster, Germany
4. Department of Hematology and Oncology, University Hospital of Schleswig-Holstein, University of Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany