1. National Board of Health and Welfare (Socialstyrelsen); Stockholm Sweden
2. Department of Sociology; Stockholm University; Stockholm Sweden
3. Department of Paediatric Dentistry, Faculty of Odontology; Malmö University; Malmö Sweden
4. Clinical Epidemiology, Department of Medicine; Karolinska Institutet; Stockholm Sweden
5. Centre for Health Equity Studies, Karolinska Institutet/Stockholm University; Stockholm Sweden
6. Department of Social Work; University of Stockholm; Stockholm Sweden