1. Faculty of Medicine and Health SciencesUniversity of AntwerpAntwerp Belgium
2. Department of Otorhinolaryngology–Head and Neck SurgeryMaastricht University Medical CenterMaastricht the Netherlands
3. Faculty of PhysicsTomsk State Research UniversityTomsk Russia
4. Department of Otorhinolaryngology–Head and Neck SurgeryAntwerp University Hospital
5. Department of NeurologyCentre Hospitalier Emile MayrischEsch‐Alzette Luxemburg
6. Department of Otolaryngology–Head and Neck SurgeryUniversity of CaliforniaSan Francisco, San Francisco California U.S.A.
7. Department of Otolaryngology–Head and Neck SurgeryJohns Hopkins University School of MedicineBaltimore Maryland U.S.A.