1. Department of Oral and Maxillofacial Surgery and Oral Pathology VU University Medical Center, Academic Centre for Dentistry Amsterdam (ACTA) Amsterdam, The Netherlands
2. Department of Oral Biochemistry ACTA, University of Amsterdam and VU University, Amsterdam, The Netherlands
3. Department of Pathology, VU University Medical Center, Amsterdam, The Netherlands
4. Department of Otolaryngology, VU University Medical Center, Amsterdam, The Netherlands