1. Mannheim Centre for European Social Research (MZES), University of Mannheim , 68131 Mannheim , Germany
2. German Centre for Integration and Migration Research, DeZIM , 10117 Berlin , Germany
3. Swedish Institute for Social Research (SOFI), Stockholm University , SE-106 91 Stockholm , Sweden
4. Nuffield College, University of Oxford , Oxford OX1 1NF , UK
5. Institute for Future Studies , SE-111 36 Stockholm , Sweden
6. Department of Social Work, Umeå University , SE-901 87 Umeå , Sweden