Institute of Social Medicine, Occupational Health and Public Health (ISAP), Medical Faculty, University of Leipzig, 04103 Leipzig, Germany. Global Brain Health Institute (GBHI), Trinity College Dublin, D02 PN40 Dublin, Ireland. Department of Health Economics and Health Services Research, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany. Department of Clinical Pharmacology and Pharmacoepidemiology, University Hospital Heidelberg, 69120 Heidelberg, Germany. Institute of General Practice/Family Medicine, University Hospital of LMU Munich, 80336 Munich, Germany. Institute of General Practice and Family Medicine, Martin-Luther-University Halle-Wittenberg, 06112 Halle (Saale), Germany. Institute of General Practice, University of Kiel, 24105 Kiel, Germany. Institute for General Practice, Work Group Medical Statistics and IT-Infrastructure, Hannover Medical School, 30625 Hannover, Germany. Institute for Community Medicine, University Medicine Greifswald, 17489 Greifswald, Germany. German Center for Neurodegenerative Diseases (DZNE), Site Rostock/Greifswald, 17489 Greifswald, Germany.