1. Department of Social Research – Social Psychology, University of Helsinki, Helsinki, Finland
2. Behavioural Science Group, Institute of Public Health, University of Cambridge, Cambridge, UK
3. Department of Health Promotion, Maastricht University/CAPHRI, Maastricht, Netherlands
4. Faculty of Social Sciences, University of Tampere/Linna, Tampere, Finland
5. Faculty of Natural Sciences, Division of Psychology, University of Stirling, Stirling, UK