1. Department of Otorhinolaryngology, Head and Neck Surgery; University Medical Center Groningen; University of Groningen; Groningen The Netherlands
2. Graduate School of Medical Sciences; Cancer Research Center Groningen; University of Groningen; Groningen The Netherlands
3. Department of Oral and Maxillofacial Surgery; University Medical Center Groningen; University of Groningen; Groningen The Netherlands
4. Department of Surgical Oncology; University Medical Center Groningen; University of Groningen; Groningen The Netherlands