1. Department of Health Economics and Health Services Research; Hamburg Center for Health Economics; University Medical Center Hamburg-Eppendorf; Hamburg Germany
2. Division of Clinical Epidemiology and Aging Research; German Cancer Research Center; Heidelberg Germany
3. Network Aging Research; University of Heidelberg; Heidelberg Germany
4. Institute for Social Medicine, Occupational Health and Public Health; University of Leipzig; Leipzig Germany
5. Department of Clinical Pharmacology and Pharmacoepidemiology; University of Heidelberg; Heidelberg Germany