1. Department for Psychiatry and Psychotherapy, University Medical Center Goettingen, Goettingen, Germany
2. Department of Medical Ethics and History of Medicine, University Medical Center Goettingen, Goettingen, Germany
3. Department of Health Services Research, School for Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany
4. German Center for Neurodegenerative Diseases (DZNE), Goettingen, Germany
5. iBiMED, Medical Sciences Department, University of Aveiro, Aveiro, Portugal
6. Institute of General Practice, Centre for Health and Society, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
7. German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
8. Department for Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital Bonn, 7 Bonn, Germany