[1
]Department of Otolaryngology, Head and Neck Surgery, University Leipzig, Leipzig,
Germany
[2
]Department of Radiation Oncology, University Leipzig, Leipzig, Germany
[3
]Department of Radiation Oncology, University Würzburg, Würzburg, Germany
[4
]Department of Otolaryngology, Head and Neck Surgery, University Würzburg, Würzburg,
Germany
[5
]Department of Radiation Oncology, University Regensburg, Regensburg, Germany
[6
]Department of Otolaryngology, Head and Neck Surgery, University Regensburg, Regensburg,
Germany
[7
]Department of Otolaryngology, Head and Neck Surgery, Klinikum Kassel, Kassel, Germany
[8
]Department of Otolaryngology, Head and Neck Surgery, Vivantes, Berlin, Neukölln, Germany
[9
]Department of Radiation Oncology, Vivantes, Berlin, Neukölln, Germany
[10
]Department of Hemato-Oncology, Vivantes, Berlin, Neukölln, Germany
[11
]Department of Hematology, Oncology and Palliative Care, Klinikum Ernst von Bergmann,
Potsdam, Germany
[12
]Department of Otolaryngology, Head and Neck Surgery, Potsdam Klinikum, Potsdam, Germany
[13
]Department of Otolaryngology, Head and Neck Surgery, University Lübeck, Lübeck, Germany
[14
]Department of Otolaryngology, Head and Neck Surgery, Katharinen Hospital, Stuttgart,
Germany
[15
]Department of Radiation Oncology, Katharinen Hospital, Stuttgart, Germany
[16
]Department of Otolaryngology, Head and Neck Surgery, MHH Hannover, Hannover, Germany
[17
]Department of Otolaryngology, Head and Neck Surgery, University Gießen, Gießen, Germany
[18
]Department of Otolaryngology, Head and Neck Surgery, Jena University Hospital, Jena,
Germany
[19
]Department of Otolaryngology, Head and Neck Surgery, University Münster, Münster,
Germany
[20
]Department of Radiation Oncology, University Münster, Münster, Germany
[21
]Department of Radiation Oncology, Head and Neck Surgery, St. Vincentius, ViDia Christliche
Kliniken Karlsruhe, Karlsruhe, Germany
[22
]Department of Otolaryngology, Head and Neck Surgery, St. Vincentius, ViDia Christliche
Kliniken Karlsruhe, Karlsruhe, Germany
[23
]Department of Otolaryngology, Head and Neck Surgery, University Aachen, Aachen, Germany
[24
]Department of Otolaryngology, Head and Neck Surgery, Klinikum Nordstadt, Hannover,
Germany
[25
]Department of Otolaryngology, Head and Neck Surgery, Helios Klinikum, Erfurt, Germany
[26
]Department of Otolaryngology, Head and Neck Surgery, University Graz, Graz, Austria
[27
]Department of Otolaryngology, Head and Neck Surgery, Malteser Hospital Duisburg, Duisburg,
Germany
[28
]Department of Otolaryngology, Head and Neck Surgery, Klinikum Bielefeld, Bielefeld,
Germany
[29
]Department of Hemato-Oncology, Klinikum Bielefeld, Bielefeld, Germany
[30
]Department of Otolaryngology, Head and Neck Surgery, Klinikum Nordhausen, Nordhausen,
Germany
[31
]Department of Radiation Oncology, CCC, Charité-University Medicine, Berlin, Germany
[32
]ClinAssess GmbH, Leverkusen, Germany
[33
]Department of Oncology, University Cancer Center Leipzig (UCCL), Leipzig, Germany
[34
]Department of Otolaryngology, Head and Neck Surgery, St. Georg Hospital Leipzig, Leipzig,
Germany
[35
]Charité Comprehensive Cancer Center, Berlin, Germany