1. Clinic for Psychiatry and Psychotherapy, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
2. Department of Sleep Medicine and Metabolic Disorders, Medical University in Lodz, Poland
3. University Hospital of Psychiatry and Psychotherapy, University Psychiatric Services, Bern, Switzerland
4. Department of Neurology, University Hospital, Bern, Switzerland
5. Medical Psychology and Medical Sociology, Faculty of Medicine, University of Freiburg, Germany