1. Department of Sleep Medicine; St. Hedwig Clinic Berlin; Berlin Germany
2. Institute of Physiology, Sleepresearch & Clinical Chronobiology, Charité; Berlin Germany
3. Department of Psychiatry and Psychotherapy; Georg-August University Göttingen; Göttingen Germany
4. Department of Psychiatry and Psychotherapy; University of Freiburg; Freiburg Germany
5. University of Applied Sciences; Ravensburg-Weingarten Germany
6. Department of Psychiatry; Heinrich-Heine University Düsseldorf; Düsseldorf Germany
7. Department of Psychiatry, Psychotherapy, and Psychosomatics; RWTH Aachen University; Aachen Germany
8. Institute of Medical Biometry, Informatics and Epidemiology; University of Bonn; Bonn Germany
9. Cologne Center for Genomics (CCG); Cologne University; Cologne Germany
10. Department of Psychiatry; Johannes Gutenberg University; Mainz Germany
11. Department of Psychiatry; Friedrich-Alexander University; Erlangen-Nuernberg Germany
12. Department of Addictive Behavior and Addictive Medicine; Central Institute of Mental Health; Mannheim Germany
13. Department of Psychiatry; Charité University Hospital; Berlin Germany
14. Department of Psychiatry; University of Bonn; Bonn Germany
15. German Heart Institute; Berlin Germany
16. Department of Biostatistics and Clinical Epidemiology; Charité- University Medicine; Berlin Germany