1. Department of Radiation Oncology University Hospital LMU Munich Munich Germany
2. Patrick G. Johnston Centre for Cancer Research Queen's University Belfast Belfast UK
3. Department of Radiation Oncology University of California at Irvine, Irvine California USA
4. Institut Curie, Inserm U 1021‐CNRS UMR 3347 Université Paris‐Saclay, PSL Research University, Centre Universitaire Orsay France