1. Swedish Institute for Social Research Stockholm University Stockholm Sweden
2. Rockwool Foundation Copenhagen Denmark
3. Institute of Social Medicine, Centre for Public Health Medical University of Vienna Vienna Austria
4. MRC/CSO Social and Public Health Sciences Unit University of Glasgow Glasgow UK
5. Population Research Unit University of Helsinki Helsinki Finland
6. Population and Society Research Unit, Department of Statistics, Computer Science, Application ‘Giuseppe Parenti’(DiSIA) University of Florence Florence Italy