Affiliation: | 1. Department for Oral and Cranio‐Maxillo and Facial Plastic Surgery, University of Cologne, Cologne, Germany;2. Center of Integrated Oncology (CIO), Cologne‐Bonn, Germany;3. Department for Oral and Cranio‐Maxillo and Facial Plastic Surgery, Minden, Germany;4. Department of Pathology, University of Cologne, Cologne, Germany;5. Department of Oto‐Rhino‐Laryngology and Head Neck Surgery, University of Jena, Jena, Germany;6. Department of Oto‐Rhino‐Laryngology and Head Neck Surgery, University of Cologne, Cologne, Germany |