1. Department of Otolaryngology, Head and Neck Surgery Medical University of Vienna Vienna Austria
2. Department of Clinical Pathology Medical University of Vienna Vienna Austria
3. Department of Biomedical Imaging and Image‐guided therapy Medical University of Vienna Vienna Austria
4. Department of Maxillofacial Surgery and Medical University of Vienna Vienna Austria
5. Department of Radiation Oncology Medical University of Vienna Vienna Austria
6. Institute of Head and Neck Diseases Evangelical Hospital Vienna Vienna Austria