1. Social and Public Policy Unit, Faculty of Social Sciences, University of Helsinki, Helsinki, Finland
2. Population Research Unit, Faculty of Social Sciences, University of Helsinki, Helsinki, Finland
3. UEF Law School, University of Eastern Finland, Joensuu, Finland
4. Finnish Institute for Health and Welfare (THL), Helsinki, Finland
5. Centre for Health Equity Studies (CHESS), Stockholm University and Karolinska Institutet, Stockholm, Sweden
6. Max Planck Institute for Demographic Research, Rostock, Germany
7. Department of Psychiatry, University of Oxford, Warneford Hospital, Oxford, UK