1. DigiHealth Institute; Neu-Ulm University of Applied Sciences; Neu-Ulm Germany
2. Institute for Health Services Research and Health Economics, Centre for Health and Society, Medical Faculty and University Hospital Düsseldorf; Heinrich-Heine University; Düsseldorf Germany
3. German Center for Neurodegenerative Diseases (DZNE); Witten Germany
4. Department of General Practice and Elderly Care Medicine; University of Groningen, University Medical Center Groningen; Groningen Netherlands
5. Institute of Nursing Science, Faculty of Medicine and University Hospital Cologne; University of Cologne; Cologne Germany