1. Department of Otorhinolaryngology, OLVG, Amsterdam, the Netherlands
2. Department of Otorhinolaryngology, Medical Centre Jan van Goyen, Amsterdam, the Netherlands
3. Department of Surgery, Albert Schweitzer Ziekenhuis, Dordrecht, the Netherlands
4. Department of Otorhinolaryngology–Head and Neck Surgery, Erasmus University Medical Center, Rotterdam, the Netherlands
5. Translational Neurosciences Research Group, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
6. Department of Surgery–Anesthesia and Intensive Care Section, GB Morgagni-L. Pierantoni Hospital, Forlì, Italy
7. Department of Anesthesiology and Intensive Care, Klinikum rechts der Isar, Technical University Munich, Germany
8. Medical Library, Department of Research and Education, OLVG, Amsterdam, the Netherlands
9. Academic Centre for Dentistry Amsterdam, Department of Oral and Maxillofacial Surgery, Amsterdam Universitaire Medische Centra, University of Amsterdam, Amsterdam, the Netherlands
10. Department of Otorhinolaryngology–Head and Neck Surgery, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
11. Keck School of Medicine, University of Southern California, Los Angeles
12. Department of Anesthesiology, University Hospital of Antwerp, Antwerp, Edegem, Belgium
13. Department of Anesthesiology, AZ Sint Jan, Brugge, Belgium
14. Institute of Pneumology, Centre of Sleep Medicine and Respiratory Care, Clinic for Pneumology and Allergology, Bethanien Hospital, University of Cologne, Solingen, Germany
15. Department of Otorhinolaryngology–Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
16. Department of Pulmonary Medicine and Multidisciplinary Sleep Disorders Centre, Antwerp University Hospital, University of Antwerp, Edegem, Belgium
17. Department of Otolaryngology, University of Washington, Seattle
18. Department of Oral Kinesiology, Academic Centre for Dentistry Amsterdam, Amsterdam, the Netherlands