1. University of Konstanz, Konstanz, Germany;
2. Lurija Institute for Rehabilitation Sciences and Health Research at the University of Konstanz, Konstanz, Germany;
3. Graduate School of Systemic Neurosciences, Ludwig-Maximilians-University Munich, Munich, Germany;
4. Center for Neurological Rehabilitation, Rehaklinik Zihlschlacht, Zihlschlacht, Switzerland;
5. Kliniken Schmieder, Konstanz, Germany;
6. Klinik für Alterspsychiatrie, Zentrum für Psychiatrie Reichenau, Reichenau, Germany
7. Kliniken Schmieder, Allensbach, Germany;
8. Department of Neurology, Philipps University, Marburg, Germany;