1. Department of Radiation Oncology, University Hospital, Munich, Germany
2. German Cancer Consortium (DKTK), Munich, Germany
3. German Cancer Research Center (DKFZ), Heidelberg, Germany
4. Department of Radiotherapy and Radiooncology, Philipps-University Marburg, University Hospital Gießen and Marburg, Marburg, Germany
5. Division of Radiation and Cancer Biology, Department of Radiation Oncology, Stanford University School of Medicine, Stanford, California, USA
6. Department of Otorhinolaryngology, University Hospital, Munich, Germany
7. Walter Brendel Centre of Experimental Medicine, University Hospital, Munich, Germany
8. Translational research in haematology/oncology, Institute of Experimental Infectious Diseases and Cancer Research, Division of the University Children’s Hospital of Zurich, Zurich, Switzerland
9. Institute of Immunology, University of Münster, Münster, Germany
10. Department of Medical Statistics, University Medical Center, Goettingen, Germany
11. Clinical Cooperation Group ‘Personalized Radiotherapy in Head and Neck Cancer’ Helmholtz Center Munich, German Research Center for Environmental Health GmbH, Neuherberg, Germany