1. Department of Otorhinolaryngology, Head and Neck Surgery Maastricht University Medical Center Maastricht The Netherlands
2. School for Oncology and Developmental Biology (GROW) Maastricht University Maastricht The Netherlands
3. School of Mental Health and Neurosciences (MHeNS) Maastricht University Maastricht The Netherlands
4. Department of Methodology and Statistics Maastricht University Maastricht The Netherlands
5. Care and Public Health Research Institute – CAPHRI Maastricht University Medical Center Maastricht The Netherlands