Affiliation: | 1. Department of Radiation Oncology, University Medical Centre Groningen, University of Groningen, , Groningen, The Netherlands;2. Department of Pathology and Medical Biology, University Medical Centre Groningen, University of Groningen, , Groningen, The Netherlands;3. Department of Oral & Maxillofacial Surgery, University Medical Centre Groningen, University of Groningen, , Groningen, The Netherlands;4. Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Centre Groningen, University of Groningen, , Groningen, The Netherlands;5. Department of Pathology, Martini Hospital, , Groningen, The Netherlands |