1. Department of Otorhinolaryngology—Head and Neck Surgery Donostia University Hospital Donosti‐San Sebastián Spain
2. Head & Neck Study Group of Young‐Otolaryngologists of the International Federations of Oto‐rhino‐laryngological Societies (YO‐IFOS) Paris France
3. Biodonostia Health Research Institute San Sebastián Spain
4. Department of Otorhinolaryngology, Hospital Santa Creu I Sant Pau Universitat Autònoma de Barcelona Barcelona Spain
5. Department of Otorhinolaryngology Doctor Peset University Hospital Valencia Spain
6. Otorhinolaryngology—Head and Neck Surgery Department Complexo Hospitalario Universitario A Coruña (CHUAC) A Coruña Galicia Spain
7. Clinical Research in Medicine, International Center for Doctorate and Advanced Studies (CIEDUS), Universidade de Santiago de, Compostela (USC) Santiago de Compostela Galicia Spain
8. LEGIT Health Bilbao Spain