1. Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium;
2. Department of Otorhinolaryngology, Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium;
3. Multidisciplinary Sleep Disorders Centre, Antwerp University Hospital, Edegem, Belgium;
4. Special Dentistry Care, Antwerp University Hospital, Edegem, Belgium;
5. Department of Pulmonology, Antwerp University Hospital, Edegem, Belgium