1. Department of Neurodegenerative Diseases and Geriatric Psychiatry, University of Bonn, Germany
2. Institute of Social Medicine, Occupational Health and Public Health, Medical Faculty, University of Leipzig, Germany
3. Institute of General Practice, Working Group Medical Statistics and IT Infrastructure, Hannover Medical School, Germany
4. Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Germany
5. Department of Health Economics and Health Services Research, Hamburg Center for Health Economics, University Medical Center Hamburg-Eppendorf, Germany
6. Institute of Primary Medical Care, University Medical Center Hamburg-Eppendorf, Germany
7. Institute of General Practice, Medical Faculty, Kiel University, Germany
8. DZNE, German Center for Neurodegenerative Diseases, Bonn, Germany