1. Otorhinolaryngology Department, Hospital Quironsalud Marbella, 29680, Marbella, Spain
2. Otorhinolaryngology Department, Hospital Quironsalud Campo de Gibraltar, Palmones, Spain
3. Neumology Department, Hospital Quironsalud Marbella, Marbella, Spain
4. Otorhinolaryngology Department, Hospital Virgen de Valme, Seville, Spain
5. Otorhinolaryngology Department Hospital Dr Peset, Valencia, Spain
6. Biomedical Informatics Group, Universidad Politécnica de Madrid, Madrid, Spain
7. Otorhinolaryngology Department, Clínica Universitaria de Navarra, Pamplona, Spain
8. Otorhinolaryngology Department, Hospital Universitario de Fuenlabrada, Universidad Rey Juan Carlos, Madrid, Spain
9. Otorhinolaryngology Department, Hospital Sanitas la Zarzuela, Madrid, Spain