1. Department of Radiation Oncology; Klinikum rechts der Isar, Technische Universität München (TUM); Munich Germany
2. Department of Radiation Sciences (DRS), Helmholtz Zentrum Munich (HMGU); Institute of Innovative Radiotherapy (iRT); Munich Germany
3. German Cancer Research Centre (DKFZ), Heidelberg and German Research Consortium (DKTK), Munich; Germany
4. MVZ Radiologie und Strahlentherapie Nürnberg; Nürnberg Germany
5. Institute of Medical Informatics, Statistics and Epidemiology, Technische Universität München (TUM); Munich Germany
6. Department of Radiotherapy and Oncology; Goethe University Frankfurt; Germany
7. German Cancer Research Centre (DKFZ), Heidelberg and German Research Consortium (DKTK), Frankfurt; Frankfurt Germany
8. OncoRay - National Centre for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus; Technische Universität Dresden; Dresden Germany
9. Department of Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus; Technische Universität Dresden; Dresden Germany
10. German Cancer Research Centre (DKFZ), Heidelberg and German Research Consortium (DKTK), Dresden; Germany
11. Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology; Berlin Germany
12. German Cancer Research Centre (DKFZ), Heidelberg and German Research Consortium (DKTK), Heidelberg; Germany
13. Department of Radiooncology and Radiotherapy; Charite University Hospital Berlin; Berlin Germany
14. German Cancer Research Centre (DKFZ), Heidelberg and German Research Consortium (DKTK), Berlin; Germany
15. Department of Radiotherapy, Medical Faculty; University of Duisburg-Essen; Essen Germany
16. German Cancer Research Centre (DKFZ), Heidelberg and German Research Consortium (DKTK), Essen; Germany
17. Department of Radiation Oncology, Medical Faculty; Medical Centre, University of Freiburg; Germany
18. German Cancer Research Centre (DKFZ), Heidelberg and German Research Consortium (DKTK), Freiburg; Germany
19. Department of Radiation Oncology; Heidelberg Ion Therapy Centre (HIT), Heidelberg Institute of Radiation Oncology (HIRO), University of Heidelberg Medical School; Heidelberg Germany
20. National Centre for Radiation Research Oncology (NCRO), University of Heidelberg Medical School; Heidelberg Germany
21. Department of Radiation Oncology; University Hospital LMU Munich, Munich; Germany
22. Clinical Cooperation Group (CCG) Personalized Radiotherapy in Head and Neck Cancer; Helmholtz Zentrum; Munich Germany
23. Department of Radiation Oncology; Faculty of Medicine and University Hospital Tübingen, Eberhard Karls University Tübingen; Tübingen Germany
24. DKTK Consortium Tübingen; Tübingen Germany
25. German Cancer Research Centre (DKFZ), Heidelberg and German Research Consortium (DKTK), Tübingen; Germany