[1] University Hospital of Freiburg,Department of Radiation Oncology
[2] German Cancer Consortium (DKTK) Partner Site Freiburg,German Cancer Research Center (Dkfz)
[3] University of Freiburg,Department of Obstetrics and Gynecology, Medical Center
[4] MD Anderson Cancer Center,Department of Radiation Oncology
[5] University Hospital Schleswig-Holstein,Department of Radiation Oncology
[6] Department of Molecular and Radiation Oncology,undefined
[7] German Cancer Research Center (Dkfz),undefined