1. Biomedical Department of Internal and Specialistic Medicine (DIBIMIS); University of Palermo; Palermo Italy
2. CNR Institute of Biomedicine and Molecular Immunology; Palermo Italy
3. Université Grenoble Alpes; INSERM U1042; CHU de Grenoble; Grenoble France
4. Division of Medicine; Department of Pulmonary Diseases; Turku University Hospital; Turku Finland
5. Department of Physiology; Sleep Research Centre; University of Turku; Turku Finland
6. Sleep Disorders Unit; Department of Respiratory Medicine; Medical School, University of Crete; Heraklion Greece
7. Department of Chest Diseases; Ege University Faculty of Medicine; Izmir Turkey
8. Department of Respiratory Medicine; G. Papanikolaou Hospital; Medical School, Aristotle University of Thessaloniki; Thessaloniki Greece
9. Sleep Unit; Department of Pneumonology; Democritus University of Thrace; Alexandroupolis Greece
10. Split Sleep Medicine Center and Department of Neuroscience; University of Split School of Medicine; Split Croatia
11. Department of Sleep Medicine; Sahlgrenska University Hospital; Gothenburg Sweden
12. Sahlgrenska Academy; Gothenburg University; Gothenburg Sweden
13. Department of Respiratory and Sleep Medicine; St. Vincent's University Hospital; Dublin Ireland
14. Conway Research Institute; University College Dublin; Dublin Ireland