aInstitute of Social Medicine, Occupational Health and Public Health (ISAP), Medical Faculty, University of Leipzig, Leipzig, Germany

bGlobal Brain Health Institute (GBHI), Trinity College Dublin, Dublin, Ireland

cDivision of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden

dThe Ageing Epidemiology Research Unit, School of Public Health, Imperial College London, London, UK

eInstitute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland

fMedical Unit Aging, Theme Inflammation and Aging, Karolinska University Hospital

gAging Research Center, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Stockholm, Sweden

hDepartment of Public Health and Welfare, Population Health Unit, Finnish Institute for Health and Welfare, Helsinki, Finland

Correspondence to Dr. rer. med. habil. Susanne Röhr, MSc, Institute of Social Medicine, Occupational Medicine and Public Health (ISAP), Medical Faculty, University of Leipzig, Philipp-Rosenthal-Straße 55, 04103 Leipzig, Germany. Tel: +49 341 9715406; e-mail: [email protected]