1. Department of Otorhinolaryngology, Head and Neck Surgery Medical Faculty Justus‐Liebig University Giessen Giessen Germany
2. Department of Otorhinolaryngology, Head and Neck Surgery Medical Faculty University Hospital Cologne Cologne Germany
3. Center for Molecular Medicine Cologne (CMMC) University of CologneFaculty of MedicineUniversity Hospital Cologne Cologne Germany
4. Institute of Medical Informatics Westphalian Wilhelms University Muenster Muenster Germany
5. Department of Pathology Medical Faculty Justus‐Liebig University Giessen Giessen Germany