1. Faculty of Social Sciences, Department of Sociology, Lund University, Lund, Sweden
2. Faculty of Medicine, Department of Clinical Sciences, Unit of Social Epidemiology, Lund University, Malmö, Sweden
3. Department of Political Science, University of Gothenburg, Göteborg, Sweden
4. Department of Social and Behavioral Sciences, Harvard School of Public Health, Boston, MA, USA
5. Center for Primary Health Care Research, Region Skåne, Malmö, Sweden