1. Unitat de Biofísica i Bioenginyeria Facultat de Medicina i Ciències de la Salut Universitat de Barcelona Barcelona Spain
2. Department of Pulmonary Diseases Faculty of Medicine Ege University Izmir Turkey
3. Faculdade de Ciências Médicas CEDOCNOVA Medical School Lisboa Portugal
4. Sleep Medicine Centre Department of Systems Medicine University of Rome Tor Vergata Rome Italy
5. Neurology Unit University Hospital of Rome Tor Vergata Rome Italy
6. Division of Medicine Department of Pulmonary Diseases Turku University Hospital Turku Finland
7. Sleep Research Centre Department of Pulmonary Diseases and Clinical Allergology University of Turku Turku Finland