1. Institute of Primary Health Care (BIHAM) University of Bern Bern Switzerland
2. Sentinella ‐ Swiss Epidemiological System Federal Office of Public Health FOPH Bern Switzerland
3. Institute of Primary and Community Care Lucerne Switzerland
4. Department of Neurology Sleep‐Wake‐Epilepsy Center University Hospital (Inselspital) and University of Bern Bern Switzerland
5. Pulmonary Department Center for Investigation and Research in Sleep University Hospital of Lausanne Lausanne Switzerland
6. University Hospital of Psychiatry and PsychotherapyUniversity of Bern Switzerland
7. Neurology Department Sechenov First Moscow State Medical University Moscow Russia
8. Center for Primary Care and Public Health (Unisanté) University of Lausanne Lausanne Switzerland