1. Otorhinolaryngology – Head and Neck Surgery Department, Complexo Hospitalario Universitario A Coruña (CHUAC), Galicia, Spain
2. Clinical Research in Medicine, International Center for Doctorate and Advanced Studies (CIEDUS), Universidade de Santiago de Compostela (USC), Galicia, Spain
3. Young-Otolaryngologists of the International Federations of Oto-Rhino-Laryngological Societies (YO-IFOS) Study Group, Paris, France
4. Otorhinolaryngology – Head and Neck Surgery Department, Complexo Hospitalario Universitario Santiago de Compostela (CHUS), Santiago de Compostela, Galicia, Spain
5. Otorhinolaryngology – Head and Neck Surgery Department, Hospital Universitario Donostia, Donostia, Spain
6. School of Medicine and Odontology, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Galicia, Spain