1. Department of Psychiatry and Psychotherapy Faculty of Medicine Medical Center ‐ University of Freiburg University of Freiburg Freiburg Germany
2. Department of Sleep Medicine and Metabolic Disorders Medical University in Lodz Lodz Poland
3. Medical Psychology and Medical Sociology Faculty of Medicine University of Freiburg Freiburg Germany
4. University Psychiatric Services (UPD) Bern Bern Switzerland