1. Institute of Epidemiology and Social Medicine, Westfälische Wilhelms-Universität Münster, Münster, Germany
2. Department of Neurology, Medical University Innsbruck, Innsbruck, Austria
3. Institute for Sleep Medicine and Neuromuscular Disorders, Münster University Hospital, Münster, Germany
4. Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
5. German Centre for Cardiovascular Research, Partner Site Greifswald, Greifswald, Germany
6. Department of Internal Medicine B, University Hospital Greifswald, Greifswald, Germany
7. Vivantes Klinikum Berlin Spandau, Department of Internal Medicine and Pulmonary Diseases, Berlin, Germany
8. Sleep Centre, University Hospital Charité Berlin, Berlin, Germany