¹University Hospital Freiburg, Department of Radiation Oncology, Freiburg, Germany; ²University Hospital Freiburg, Department of Radiation Oncology, Freiburg, Germany; ³University Hospital Freiburg, Department of Radiation Oncology , Freiburg, Germany; ⁴University Hospital Freiburg, Department of Radiation Oncology , Freibirg, Germany

(1)Helmholtz Zentrum Muenchen - German Research Center for Environmental Health, Research Unit Radiation Cytogenetics, Munich, Germany;(2)University Hospital LMU Munich, Department of Radiation Oncology, Munich, Germany;(3)Helmholtz Zentrum Muenchen - German Research Center for Environmental Health, Clinical Cooperation Group "Personalized Radiotherapy in Head and Neck Cancer", Munich, Germany;(4)University of Luebeck, Luebeck Institute of Experimental Dermatology and Institute for Cardiogenetics, Luebeck, Germany;(5)University Hospital Schleswig Holstein Campus Luebeck, Clinic for Otorhinolaryngology - Head and Neck Surgery, Luebeck, Germany;(6)University Hospital Schleswig-Holstein Campus Luebeck, Institute of Pathology, Luebeck, Germany;(7)Ludwig-Maximilians University, Institute for Pathology, Munich, Germany;(8)Helmholtz Zentrum Muenchen - German Research Center for Environmental Health, Research Unit Analytical Pathology, Munich, Germany;(9)University Hospital Schleswig Holstein Campus Luebeck, Institute of Pathology, Luebeck, Germany;

(1)Chulalongkorn University, Division of Therapeutic Radiology and Oncology- Faculty of Medicine, Bangkok, Thailand;(2)King Chulalongkorn Memorial Hospital- Thai Red Cross Society, Division of Therapeutic Radiology and Oncology- Department of Radiology, Bangkok, Thailand;