1. Department of Nuclear Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
2. Sleep-Wake-Epilepsy-Center, Department of Neurology, Inselspital, Bern University Hospital, Bern, Switzerland
3. Centre for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland
4. Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, Basel, Switzerland
5. Augenarztpraxis Klingentalstrasse, Basel, Switzerland
6. University of Basel, Basel, Switzerland
7. Pallas-Kliniken, Olten and Bern, Switzerland