Published on in Vol 6 , No 12 (2018) :December

1 Prevention and Evaluation , Leibniz Institute for Prevention Research and Epidemiology – BIPS , Bremen , DE
2 Health Sciences , University of Bremen , Bremen , DE
3 Institute of Public Health , University of Gondar , Gondar , ET
4 Center of Clinical Psychology and Rehabilitation , University of Bremen , Bremen , DE
5 Institute for Social Medicine, Epidemiology, and Health Economics , Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin , Humboldt-Universität zu Berlin, and Berlin Institute of Health , Berlin , DE
6 Network Aging Research , University of Heidelberg , Heidelberg , DE
7 Institute of Medical Sociology , Centre for Health and Society, Medical Faculty , University of Duesseldorf , Duesseldorf , DE