1. German Centre of Gerontology (DZA), Berlin, Germany; Bremen International Graduate School of Social Sciences (BIGSSS), University of Bremen, Germany
2. School of Social Sciences and Mannheim Centre for European Social Research (MZES), University of Mannheim, Germany
3. Bremen International Graduate School of Social Sciences (BIGSSS) and Research Center on Inequality and Social Policy (SOCIUM), University of Bremen, Germany