1 Population Research Unit, Department of Social Research, University of Helsinki, Helsinki, Finland, MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, United Kingdom, fanny.kilpi@bristol.ac.uk Population Research Unit, Department of Social Research, University of Helsinki, Helsinki, Finland, Laboratory of Population Health, Max Planck Institute for Demographic Research, Rostock, Germany, Centre for Health Equity Studies (CHESS), Stockholm University and Karolinska Institutet, Stockholm, Sweden Social Psychology, Department of Social Research, University of Helsinki, Helsinki, Finland Population Research Unit, Department of Social Research, University of Helsinki, Helsinki, Finland Swedish Institute for Social Research, Stockholm University, Stockholm, Sweden Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA.