1. Surgery and Medical-Surgical Specialties Department, University of Oviedo, Oviedo, Spain
2. School of Dentistry, University of Alberta, Edmonton Clinic Health Academy, Edmonton, Alberta, Canada
3. Unit of Radiology, University Hospital Central of Asturias, Oviedo, Spain
4. Department of Medicine, University of Oviedo, Oviedo, Spain
5. Sleep and Ventilation Unit, Respiratory Division, Cruces University Hospital, Barakaldo, Spain
6. Oral and Maxillofacial Unit, Cruces University Hospital, Barakaldo, Spain
7. Surgery and Implantology Department, San Antonio Catholic University of Murcia, Murcia, Spain
8. Stomatology I Department, Faculty of Medicine, University of the Basque Country, Leioa, Spain
9. Surgery and Medical-Surgical Specialties Department, Area of Orthodontics, Faculty of Medicine, University of Oviedo, Oviedo, Spain