1 Department of Radiation Oncology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsklinikum Erlangen, Erlangen, Germany.
2 Radiation Immuno-Oncology Group, Center of Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar, Technical University Munich (TUM), Munich, Germany.
3 John van Geest Cancer Research Centre, Nottingham Trent University, Nottingham, United Kingdom.
4 Department of Radiotherapy and Oncology, University of Frankfurt, Frankfurt, Germany.