1. Department of Otorhinolaryngology, Head and Neck Surgery, Maastricht University Medical Center, 6202 AZ Maastricht, The Netherlands
2. GROW-School for Oncology and Reproduction, Maastricht University, 6229 ER Maastricht, The Netherlands
3. Department of Methodology and Statistics, Maastricht University, 6200 MD Maastricht, The Netherlands
4. Care and Public Health Research Institute—CAPHRI, Maastricht University, 6200 MD Maastricht, The Netherlands
5. Division of Medical Oncology, Department of Internal Medicine, Maastricht University Medical Center, 6202 AZ, The Netherlands
6. Department of Internal Medicine, Diakonessenhuis, 3508 TG Utrecht, The Netherlands
7. Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC Cancer Institute, University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands