1. Division of Epidemiology and Health Services Research, Institute of Medical Biostatistics, Epidemiology and Informatics, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz, Germany
2. University Cancer Center Mainz, Mainz, Germany
3. Division of Social Determinants of Health, Department of Sport and Health Sciences, Technical University of Munich, Munich, Germany
4. Department of Otorhinolaryngology, Hospital Chemnitz, Chemnitz, Germany
5. Department of Otorhinolaryngology and Head and Neck Surgery, Carl-Thiem-Klinikum Cottbus gGmbH, Cottbus, Germany
6. Department of Otorhinolaryngology and Head and Neck Surgery, Community Hospital Dresden, Dresden, Germany
7. Department of Otorhinolaryngology and Head and Neck Surgery, University Medical Center of Martin-Luther-University, Halle, Germany
8. Department of Otorhinolaryngology, St Georg Hospital, Leipzig, Germany
9. Department of Otorhinolaryngology and Head and Neck Surgery, University Medical Center of Leipzig University, Leipzig, Germany
10. Department of Otorhinolaryngology, Südharz-Krankenhaus Nordhausen, Nordhausen, Germany
11. Department of Otorhinolaryngology, Sana-Klinikum Remscheid, Remscheid, Germany
12. Department of Radiotherapy, University Medical Center Schleswig-Holstein Kiel, Kiel, Germany
13. Department of Otorhinolaryngology and Head and Neck Surgery, Technical University of Munich, Munich, Germany
14. Department of Otorhinolaryngology and Head and Neck Surgery, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz, Germany
15. Department of Otorhinolaryngology and Head and Neck Surgery, University Medical Center of Greifswald University, Greifswald, Germany
16. Department of Otorhinolaryngology and Head and Neck Surgery, Jena University Hospital, Jena, Germany