1. Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich, Munich, Bayern, Germany
2. Department of Radiation Oncology, University of Zurich, Zurich, Switzerland
3. Deutsches Konsortium für Translationale Krebsforschung (DKTK)–Partner Site Munich, Munich, Germany
4. Institute of Radiation Medicine (IRM), Department of Radiation Sciences (DRS), Helmholtz Zentrum München, Neuherberg, Germany
5. Department of Radiation Oncology, University of Jena, Jena, Germany