(1)Hospital Universitario Lucus Augusti, Medical Physics, Lugo, Spain;

(1)AMSTERDAM UMC, RADIATION ONCOLOGY DEPARTMENT, AMSTERDAM, THE NETHERLANDS;

(1)University Medical Center Freiburg, Department of Radiation Oncology, Freiburg, Germany;(2)German Cancer Research Center dkfz, Department of Molecular Radiation Oncology, Heidelberg, Germany;(3)Institute of Transfusion Medicine and Immunology, German Red Cross Blood Service Baden-Württemberg - Hessen, Mannheim, Germany;(4)University Hospital Heidelberg, Department of Radiation Oncology, Heidelberg, Germany;

(1)Maastricht University Medical Centre+, Department of Radiation Oncology MAASTRO, Maastricht, The Netherlands;(2)Technical Universty of Lisbon, Center of Nuclear Sciences and Technologies, Lisboa, Portugal;

¹Iskenderun Gelisim Hospital, Radiation Oncology, Hatay, Turkey; ²Kutahya Health Sciences University, Training and Research Center, Health Sciences, Kutahya, Turkey; ³Sakarya University Training and Research Hospital, Radiation Oncology, Sakarya, Turkey; ⁴Baskent University Faculty of Medicine, Adana Dr Turgut Noyan Research and Treatment Center, Radiation Oncology, Adana, Turkey

(1)Helmholtz Zentrum Muenchen - German Research Center for Environmental Health, Research Unit Radiation Cytogenetics, Neuherberg, Germany;(2)University Hospital- LMU Munich, Department of Radiation Oncology, Munich, Germany;(3)Helmholtz Zentrum München- German Research Center for Environmental Health GmbH, Clinical Cooperation Group “Personalized Radiotherapy in Head and Neck Cancer”, Neuherberg, Germany;(4)DKFZ, German Cancer Research Center, Heidelberg, Germany;(5)German Cancer Consortium DKTK, Partner Site Munich, Munich, Germany;(6)LMU Munich, Center for Neuropathology and Prion Research, Munich, Germany;(7)University Hospital Düsseldorf UKD- Heinrich Heine University, Institute for Neuropathology, Düsseldorf, Germany;(8)German Cancer Consortium DKTK, Partner Site Essen/Düsseldorf, Essen/Düsseldorf, Germany;(9)Laboratoire National de Santé LNS, National Center of Pathology NCP, Dudelange, Luxembourg;(10)Luxembourg Institute of Health LIH, Luxembourg Center of Neuropathology LCNP, Luxembourg, Luxembourg;(11)Luxembourg Institute of Health LIH, Department of Oncology, Luxembourg, Luxembourg;(12)University of Luxembourg, Luxembourg Centre for Systems Biomedicine LCSB, Esch-sur-Alzette, Luxembourg;(13)University Hospital Düsseldorf UKD- Heinrich Heine University, Department of Radiotherapy and Radiation Oncology, Düsseldorf, Germany;(14)University Hospital Düsseldorf UKD- Heinrich Heine University, Department of Neurosurgery, Düsseldorf, Germany;(15)University Hospital Frankfurt, Department of Radiation Oncology, Frankfurt, Germany;(16)University Hospital- LMU Munich, Department of Neurosurgery, Munich, Germany;

¹Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Department of Radiation Oncology, Jinan, China

¹Cancer Research Institute, Tomsk National Research Medical Center, Laboratory of Cancer Progression Biology, Tomsk, Russian Federation; ²Cancer Research Institute, Tomsk National Research Medical Center, Department of Head and Neck Cancer, Tomsk, Russian Federation

¹Hospital Universitario HM Sanchinarro. HM Hospitales. , Radiation Oncology, Madrid, Spain; ²Complejo Hospitalario de Navarra, Radiation Oncology, Navarra, Spain; ³Hospital Universitario HM Puerta del Sur. HM Hospitales. , Radiation Oncology, Madrid, Spain; ⁴Hospital Universitario HM Sanchinarro. HM Hospitales. , Medical Physics, Madrid, Spain; ⁵Hospital Universitario HM Sanchinarro. HM Hospitales, Radiation Oncology, Madrid, Spain; ⁶Hospital Universitario HM Sanchinarro. HM Hospitales, Medical Physis, Madrid, Spain; ⁷Complejo Hospitalario de Navarra, Medical Physics, Navarra, Spain; ⁸Complejo Hospitalario de Navarra, Medical Physcis, Navarra, Spain; ⁹Hospital Universitario HM Puerta del Sur. HM Hospitales. , Medical Physics, Madrid, Spain