1. Université Paris Descartes Sorbonne Paris Cité, HEGP, APHP, Service d'Oto-Rhino-Laryngologie et Chirurgie Cervico-Faciale; Paris
2. Department of Otorhinolaryngology; Hospital Universitario Sant Joan, calle Sant Joan s/n; Reus Spain
3. Clinique d'Arcachon; Arcachon France
4. Department of Head & Neck Surgery; The University of Texas M.D., Anderson Cancer Center; Houston Texas U.S.A