1. Institute of Public Health, Charité – Universitätsmedizin Berlin, Berlin, Germany
2. Charité Comprehensive Cancer Center, Charité – Universitätsmedizin Berlin, Berlin, Germany
3. Institute of General Practice, Charité – Universitätsmedizin Berlin, Berlin, Germany
4. Center for Stroke Research Berlin, Charité – Universitätsmedizin Berlin, Berlin, Germany
5. Institute of Medical Sociology and Rehabilitation Science, Charité – Universitätsmedizin Berlin, Berlin, Germany
6. Institute of Biometry and Clinical Epidemiology, Charité – Universitätsmedizin Berlin, Berlin, Germany
7. Brandenburg Medical School Theodor Fontane, Institute of Social Medicine and Epidemiology, Brandenburg, Germany