1. Department of Medical Psychology and Medical Sociology, Division Psychosocial Oncology; University Hospital Leipzig; Leipzig Germany
2. Department of Otorhinolaryngology; University Hospital Leipzig; Leipzig Germany
3. Department of Otorhinolaryngology; Clinical Center Chemnitz; Chemnitz Germany
4. Department of Otorhinolaryngology; Clinical Center St. Georg; Leipzig Germany
5. Department of Otorhinolaryngology; Jena University Hospital; Jena Germany
6. Department of Otorhinolaryngology; Clinical Center Dresden-Friedrichstadt; Dresden Germany
7. Department of Otorhinolaryngology; Clinical Center Südharz Nordhausen; Nordhausen Germany
8. Department of Otorhinolaryngology; Clinical Center Carl Thiem Cottbus; Cottbus Germany
9. University Medical Centre Mainz, Institute of Medical Biostatistics, Epidemiology, and Informatics (IMBEI); Mainz Germany