1. Max Planck Institute for Demographic Research, Rostock, Germany
2. Federal Institute for Population Research (BiB), Wiesbaden, Germany
3. Max Planck–University of Helsinki Center for Social Inequalities in Population Health, Rostock, Germany, and Helsinki, Finland
4. University of Cologne, Cologne, Germany
5. Vytautas Magnus University, Kaunas, Lithuania
6. Population Research Unit, University of Helsinki, Helsinki, Finland