1. Department of Otolaryngology-Head and Neck Surgery, Grenoble University Hospital, France;
2. Joseph Fourier University, Saint-Martin-dHères, France;
3. INSERM U823, BP170, Grenoble, France;
4. Division of Otolaryngology, Department of Surgery, University of Alabama at Birmingham, USA
5. Department of Radiotherapy, Grenoble University Hospital, France;