1. IFT Institut für Therapieforschung, Munich, Germany
2. Munich Center for the Economics of Aging (MEA), Max-Planck-Institute for Social Law and Social Policy, Munich, Germany
3. Chemnitz University of Technology, Chemnitz, Germany
4. Department of Public Health Science, Centre for Social Research on Alcohol and Drugs, Stockholm University, Stockholm, Sweden
5. Institute of Psychology, ELTE Eötvös Loránd University, Budapest, Hungary