1. Ageing Clinical Research, Department II of Internal Medicine and Center for Molecular Medicine Cologne, Faculty of Medicine and University Hospital Cologne University of Cologne Cologne Germany
2. Scientific Directorate–Biostatistics E.O. Galliera Hospital Genova Italy
3. Institute of Medical Statistics and Computational Biology University Hospital of Cologne Cologne Germany
4. Institute for General Practice, Academic training practive University Hospital of Cologne Cologne Germany
5. Institute for General Practice University Hospital of Cologne Cologne Germany
6. Institute for General Practice Hannover Medical School Hannover Germany
7. CECAD, Faculty of Medicine and University Hospital Cologne University of Cologne Cologne Germany
8. Department Geriatric Care Orthogeriatrics and Rehabilitation, E.O. Galliera Hospital Genova Italy
9. Department of Interdisciplinary Medicine University of Bari Bari Italy