1. Department of Radiation Oncology Northwestern Memorial Hospital Northwestern University Feinberg School of Medicine Chicago IL USA
2. Department of Radiation Oncology Ospedale Di Vicenza Vicenza Italy
3. Department of Medical Physics Memorial Sloan‐Kettering Cancer Center New York NY USA
4. Medical Radiation Sciences Department of Immunology, Genetics and Pathology Uppsala University Uppsala Sweden
5. Institute of Radiation Oncology Cantonal Hospital of Graubünden Chur Switzerland
6. Department of Radiation Oncology University Hospitals Cleveland Medical Center Cleveland OH USA
7. Department of Radiation Oncology Vanderbilt University School of Medicine Nashville TN USA
8. Molecular and Clinical Cancer Medicine Institute of Systems, Molecular and Integrative Biology University of Liverpool Liverpool UK
9. Department of Radiation Oncology University of PittsburghSchool of Medicine and UPMC Hillman Cancer Center Pittsburgh PA USA
10. Department of Radiation Oncology Duke University Medical Center Durham NC USA
11. Department of Radiation Oncology University of Chicago Chicago IL USA
12. Department of Radiation Oncology Klinik fur Strahlentherapie University of Würzburg Würzburg Germany