1. Department of Otorhinolaryngology and Head and Neck Surgery; Erasmus University Medical Center, Medical Center Rotterdam; Rotterdam The Netherlands
2. Center for Optical Diagnostics and Therapy; Department of Dermatology; Erasmus University Medical Center, University Medical Center Rotterdam; Rotterdam The Netherlands
3. Department of Pathology; Erasmus University Medical Center, University Medical Center Rotterdam; Rotterdam The Netherlands
4. Department of Oral and Maxillofacial surgery; Erasmus University Medical Center, University Medical Center Rotterdam; Rotterdam The Netherlands
5. Department of Otorhinolaryngology and Head and Neck Surgery; Leiden University, Medical Center; Leiden The Netherlands
6. Department of Oncology Documentation; Leiden University Medical Center; Leiden The Netherlands