1. Department of Oral and Maxillofacial Surgery University Hospital Schleswig‐Holstein (Campus Lübeck) Lübeck Germany
2. Institute of Pathology University Hospital Schleswig‐Holstein (Campus Lübeck) Lübeck Germany
3. Department of Radiation Oncology University Hospital Schleswig‐Holstein (Campus Lübeck) Lübeck Germany
4. Department of Oral and Maxillofacial Surgery Dortmund General Hospital Dortmund Germany