1. OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany;
2. Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology – OncoRay, Dresden, Germany;
3. Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany;
4. Department of Radiation Oncology, University Medical Center Groningen, Groningen, The Netherlands;
5. Department of Radiation Oncology, Gustave Roussy Cancer Campus, Villejuif, France;
6. Department of Radiation Oncology, Radboud University Medical Center, Nijmegen, The Netherlands;
7. The Christie NHS Foundation Trust, Division of Cancer Science, The University of Manchester, Manchester, UK;
8. Department of Radiotherapy, Institut Claudius Regaud/Institut Universitaire du Cancer de Toulouse - Oncopole, Toulouse, France;
9. Radiation Oncology Department, Ghent University Hospital and Ghent University, Ghent, Belgium;
10. Department of Radiation Oncology, University Hospital Zürich, Zürich, Switzerland;
11. Department of Radiation Oncology (MAASTRO), GROW – School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands;
12. German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center DKFZ, Heidelberg, Germany;
13. National Center for Tumor Diseases (NCT), Partner Site Dresden, Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany;