1. Sleep Respiratory Disorders Unit, Hospital Universitario La Zarzuela, 28023 Madrid, Spain
2. Universidad Rey Juan Carlos, 28002 Madrid, Spain
3. Department of Otolaryngology, Hospital Universitario La Moraleja, 28050 Madrid, Spain
4. Department of Otolaryngology, Hospital Universitario de Fuenlabrada, 28942 Madrid, Spain
5. Department of Otolaryngology, Hospital Universitario La Zarzuela, 28023 Madrid, Spain
6. Department of Otolaryngology, Hospital Quirónsalud San José, 28002 Madrid, Spain
7. Department of Otolaryngology Head and Neck Surgery, Hospital San José, Monterrey 64718, Mexico
8. Department of Stomatology, Hospital Universitario Fundación Jiménez Díaz, 28040 Madrid, Spain
9. Department of Otolaryngology Head and Neck Surgery, Hospital Universitario Fundación Jiménez Díaz, 28040 Madrid, Spain
10. Department of Basic Psychology II, Faculty of Psychology, UNED—Universidad Nacional de Educación a Distancia, 28040 Madrid, Spain